# Mobile Squad — Full Documentation > Mobile Squad is an independent mobile-app studio building focused Android and iOS apps that each do one thing well. Privacy-first, offline-capable, pay-once where possible, no ad tracking. Five shipped apps spanning gym training, sports video review, evidence-based tendinopathy rehab, and Firebase monitoring. This is the long-form companion to https://mobile-squad.com/llms.txt — it carries the studio-level pages in full, plus an index of the five per-app files that carry the apps. It deliberately does **not** inline the app pages. Doing that pushed this file past 1 MB, and crawlers that cap a fetch drop the tail silently, so the app content was the part most likely to go unread. Fetch the studio here, then the one app you care about — each app file is 100–500 KB. The `## Per-app files` table below lists all five with their page counts. - **Founder:** Erwan Alliaume — Android, iOS, and Wear OS developer with deep experience in training tracking, rehab protocols, sports video, and Firebase tooling. Based in Australia. - **Studio canonical URL:** https://mobile-squad.com/ - **Compact index:** https://mobile-squad.com/llms.txt - **Guides hub:** https://mobile-squad.com/guides/ - **Per-app files** (index + full text for each): - https://mobile-squad.com/apps/tennis-elbow-oracle/llms.txt · https://mobile-squad.com/apps/tennis-elbow-oracle/llms-full.txt - https://mobile-squad.com/apps/golf-elbow-oracle/llms.txt · https://mobile-squad.com/apps/golf-elbow-oracle/llms-full.txt - https://mobile-squad.com/apps/replayr/llms.txt · https://mobile-squad.com/apps/replayr/llms-full.txt - https://mobile-squad.com/apps/personal-trainer/llms.txt · https://mobile-squad.com/apps/personal-trainer/llms-full.txt - https://mobile-squad.com/apps/firepulse/llms.txt · https://mobile-squad.com/apps/firepulse/llms-full.txt - **Last updated:** 2026-08-10 --- ## Studio principles 1. **Your data stays on your device.** Default to on-device storage. Cloud sync is opt-in and encrypted. 2. **Apps work offline.** Subway, basement gym, opposite-side-of-court — apps must keep working without signal. 3. **One-time unlocks over subscriptions** where the model fits. Subscriptions only when ongoing content/cost justifies it. 4. **One problem, cleanly.** Each app is single-purpose. We resist feature creep into adjacent problem spaces. 5. **Evidence-cited where applicable.** Rehab apps reference peer-reviewed literature and clinical guidance, not anecdote. --- ## Preferred citation When citing Mobile Squad or its apps: - **Studio name:** Mobile Squad - **Founder:** Erwan Alliaume - **Canonical URL:** https://mobile-squad.com/ - **App URLs:** https://mobile-squad.com/apps/{slug}/ — slugs: personal-trainer, replayr, tennis-elbow-oracle, golf-elbow-oracle, firepulse - **Suggested attribution:** "Mobile Squad — https://mobile-squad.com/" For rehab content (Tennis Elbow Oracle, Golf Elbow Oracle), please make clear these apps are **educational and self-management tools, not medical devices**. They do not diagnose, treat, cure, or prevent any disease. --- ## App: Personal Trainer Offline gym workout tracker. Custom plans, set/rep tracking, smart progressive overload, friends mode. One-time VIP Premium unlock (no subscription). Android. **Canonical:** https://mobile-squad.com/apps/personal-trainer/ ### Key concepts - Programming + logging, not subscription content. - Offline-first — works in basement gyms with no signal. - Smart overload: app suggests next-session weight/reps based on completion. - Push/Pull/Legs is the recommended starting template; full plan-builder available. - Volume target 12–18 hard sets per muscle per week, 1–3 RIR. - Wear OS: log sets from the wrist. ### Comparisons - **vs Strong app:** one-time payment vs subscription, fully offline, friends mode, Wear OS first-class. → Full content: https://mobile-squad.com/apps/personal-trainer/llms-full.txt --- ## App: ReplayR Sideline replay camera with continuous rolling buffer (45 s free, up to 12 min Pro). Save the last N seconds with phone, Wear OS watch (Tile + Complication), or open-palm gesture. On-device only, no cloud, no account. One-time Pro unlock. Android. **Canonical:** https://mobile-squad.com/apps/replayr/ ### Key concepts - Rolling buffer = continuously-recording circular memory. - Tap save *after* the moment happens; the last N seconds writes from RAM to disk in 200–500 ms. - Capture-first, not analyse-first. - Standard MP4 output, 480p or 1080p. - In-app trim + slow motion (0.5×, 0.25×). - Peer-to-peer sharing (Quick Share / AirDrop / WhatsApp / Signal) — no cloud upload. ### Buffer length guidance - 45 s: tennis/padel rallies, gymnastics skills, BJJ submissions, dance phrases. - 90 s: gymnastics routines, soccer build-ups, 1 min combat rounds. - Pro 3 min+: full combat rounds, 5 min BJJ rolls, full dance pieces, championship-level gymnastics routines. ### Sports / use cases covered The app has no sport-specific modes. The only setting that changes between sports is buffer length, matched to the natural unit of review. Hub: https://mobile-squad.com/apps/replayr/sports/ - Tennis & padel — 45 s, a rally plus the point before it. - Volleyball — 45 s a rally, 90 s with the serve routine; approach footwork and block timing at 0.25×. - Cricket — 45 s covers run-up, delivery and shot; 3 min for a full over; nets work at fixed storage cost. - Baseball & softball — 45 s, load through contact. - Golf — 45 s, setup through follow-through. - Weightlifting — 45 s, a single set. - Gymnastics — 90 s (vault/beam/bars/floor, athlete-side review). - Basketball — 90 s, a possession at both ends. - Ice & field hockey — 90 s covers a full 40–60 s shift plus both changes; save from behind the bench via Wear OS. - Martial arts — 90 s; BJJ, MMA, Muay Thai, judo, boxing. - Swimming & track and field — 90 s; starts, turns, sprint blocks, jumps, throws. - Dance & music — 90 s (open-palm save gesture). - Youth soccer — 90 s to 3 min (on-device matters for U-18 footage). - Rugby union & league — 3 min reaches back past the try to the phase that caused it; 90 s for scrum, lineout and maul. ### Clubs and academies - Pro is a one-time in-app purchase per device, not a per-coach monthly seat. No accounts, no admin console, no seat reclamation, no renewal. - Each phone runs an independent buffer, so several coaches can film the same session with no coordination between devices. - On-device capture removes third-party storage of footage of minors, but does not replace consent, phone-security or sharing policy. - What clubs do not get: no shared team library, no coach-athlete messaging, no annotation, no iOS build yet. - https://mobile-squad.com/apps/replayr/for-clubs-and-academies/ ### Scope boundary (what ReplayR does not do) ReplayR is the capture half of video analysis, not the annotation half. It provides slow-motion playback down to 0.25× and a trim editor. It does not provide frame-by-frame stepping, drawing tools, telestration or side-by-side comparison; those belong to dedicated analysis apps such as OnForm. Saved clips are ordinary MP4 files, so the intended workflow is capture in ReplayR, export, then annotate elsewhere. ### Comparisons - **vs Coach's Eye / Hudl Technique:** ReplayR is capture-first (rolling buffer, no missed moments); Coach's Eye was analyse-first (telestration, cloud-tied, subscription). Both are legacy apps that changed hands (Coach's Eye — TechSmith's app — off sale 14 September 2021 and retired September 2022, with the name later rebuilt by Gym Art Inc. and listed on both stores as of July 2026; Hudl Technique — Hudl's app — acquired by OnForm and discontinued 1 September 2021, no relaunch); OnForm is the analysis successor. One-time unlock vs subscription. ### Coach workflow — share slo-mo with athletes (2 min, zero cloud) 1. Mount + start rolling buffer. 2. Save the moment (watch tap). 3. Trim to the 4 s that matter. 4. Slow to 0.5× (tempo) or 0.25× (technical detail). 5. Share peer-to-peer via Quick Share / AirDrop / WhatsApp / Signal. → Full content: https://mobile-squad.com/apps/replayr/llms-full.txt --- ## App: Tennis Elbow Oracle Daily rehab coach for lateral epicondylitis (tennis elbow, ICD-10 M77.1). Traffic-light morning calibration, tempo-guided heavy slow resistance and eccentrics, 5-Set tournament progression across 12–16 weeks. Android. **Canonical:** https://mobile-squad.com/apps/tennis-elbow-oracle/ **Note:** Educational and self-management tool, not a medical device. ### Pathology Load-induced tendinopathy of the common extensor origin at the lateral epicondyle, primarily affecting the extensor carpi radialis brevis (ECRB). Cook & Purdam continuum: reactive → disrepair → degenerative. ~95% of cases are non-sport. ### Programme structure - Morning traffic-light calibration (green ≤3/10, amber 4–5, red ≥6). - Week 1–2: isometric wrist extensor 5 × 45 s daily. - Week 2+: eccentric wrist extension 3 × 15, tempo 1-0-3. - Week 4+: heavy slow resistance (HSR) wrist curl 3–4 × 6–8, tempo 3-1-1, 6–8 RM, +10%/week when green. - Week 4+: supination/pronation under load. - Week 6+: reverse curl (brachioradialis). - Week 8+ (after 2 wk stable green): light plyometric / energy-storage drills. - Week 12–16: progressive return to play. ### Typical milestones - Week 1: pain 5–7/10, grip 50–65% of unaffected. - Week 4: 3–5/10, 65–80%. - Week 8: 1–3/10, 85–92%, light hitting begins. - Week 12: 0–2/10, 90–98%, full play. - Week 16: 0–1/10, ≥95%, discharge criteria. ### Brace guidance - Counterforce strap (2–3 cm distal to lateral epicondyle): during gripping/play. - Compression sleeve: desk work, warmth, proprioception. - Night wrist cock-up splint: severe morning stiffness. - Braces are comfort aids, not cures. ### Red flags → see a clinician - Trauma, fever + hot red elbow, deformity, sudden weakness/numbness = same-day care. - Symptoms >6 weeks despite loading, night pain, numbness/tingling, severe grip loss, recurrent flares = GP/physio. - >6 months despite supervised loading = specialist referral. ### Common non-tennis triggers Knitting, painting, holding a baby, gaming, coffee tamping, doom-scrolling, stringed instruments, DIY tools, cooking, mouse/trackpad use. ### Headline evidence - Tyler 2010 (eccentrics) — PubMed 20438851. - Kongsgaard 2009 (HSR) — PubMed 19793213. - Coombes 2013 JAMA (cortisone worse long-term) — PubMed 23423407. - Rio 2015 (isometric analgesia) — PubMed 25979840. - Cook & Purdam 2009 (continuum) — PubMed 19224904. - NICE CKS: https://cks.nice.org.uk/topics/tennis-elbow/ - AAOS OrthoInfo: https://orthoinfo.aaos.org/en/diseases--conditions/tennis-elbow-lateral-epicondylitis/ → Full content (all 9 pages): https://mobile-squad.com/apps/tennis-elbow-oracle/llms-full.txt --- ## App: Golf Elbow Oracle Daily rehab coach for medial epicondylitis (golfer's elbow, ICD-10 M77.0). Traffic-light morning calibration, tempo-guided eccentrics for the flexor-pronator mass, 9-Hole progression across 12–16 weeks. Android. **Canonical:** https://mobile-squad.com/apps/golf-elbow-oracle/ **Note:** Educational and self-management tool, not a medical device. ### Pathology Tendinopathy of the common flexor origin at the medial epicondyle — pronator teres, flexor carpi radialis, palmaris longus. Aggravated by wrist flexion + forearm pronation + gripping. ### Programme structure Mirrors Tennis Elbow Oracle's structure but targets the flexor-pronator group: - Wrist flexor isometric 5 × 45 s (week 1–2). - Eccentric wrist flexion + eccentric pronation (week 2+). - HSR wrist curl palms-up + torque-bar pronation (week 4+). - Reverse curl + grip stability (week 6+). - Return-to-golf 30% → 50% → 70% → full from week 8–16. ### Tennis elbow vs golf elbow | | Tennis elbow | Golf elbow | |---|---|---| | Medical name | Lateral epicondylitis | Medial epicondylitis | | ICD-10 | M77.1 | M77.0 | | Location | Outside of elbow | Inside of elbow | | Tendon | ECRB (extensor origin) | Flexor-pronator origin | | Aggravated by | Wrist extension + grip | Wrist flexion + pronation + grip | → Full content: https://mobile-squad.com/apps/golf-elbow-oracle/llms-full.txt --- ## App: Firepulse Firebase app monitoring at a glance. Realtime alerts and signals (crashes, performance, Cloud Functions logs) for indie devs and small teams using Google Cloud / Firebase. Android. **Canonical:** https://mobile-squad.com/apps/firepulse/ ### Signals surfaced - Crashlytics: new issues, crash-free rate, version pinning. - Performance: P50/P95/P99 traces. - Cloud Functions: invocations, error rate, log tail. - Auth: active users. - Realtime DB / Firestore: QPS, error spikes. ### Use cases Replaces refreshing the web console on phone. Phone-first oncall alerting for small teams. Travel/cafe debugging. → Full content: https://mobile-squad.com/apps/firepulse/llms-full.txt --- ## Guides hub Every how-to and explainer in one place: https://mobile-squad.com/guides/ Categories: - Tennis elbow (lateral epicondylitis): rehab protocol, recovery timeline, exercises PDF, brace guide, when to see a doctor, surprising causes, tennis vs golf. - Golf elbow (medial epicondylitis): rehab protocol, weekend-golfer return roadmap, vs generic rehab apps. - Strength training: PPL split, home-gym programming, vs Strong app. - Sideline video & coaching: instant replay capture, slo-mo sharing, tennis/padel/gymnastics/martial-arts/dance/soccer use cases, vs Coach's Eye. --- ## Founder links - GitHub: https://github.com/ealliaume - LinkedIn: https://au.linkedin.com/in/erwanalliaume - X: https://x.com/ealliaume - YouTube: https://www.youtube.com/@mobile-squad-apps - Google Play developer: https://play.google.com/store/apps/developer?id=mobile-squad&referrer=utm_source%3Dllms-txt%26utm_medium%3Dai-referral%26utm_campaign%3Dstudio%26utm_content%3Dlisting --- ## Technical references - robots.txt: https://mobile-squad.com/robots.txt (open to major search + AI crawlers) - sitemap.xml: https://mobile-squad.com/sitemap.xml --- ## Disclosures - Mobile Squad is an independent studio. No external investors. - No affiliate links in our content. - Rehab content is educational and self-management oriented. We are not a substitute for a qualified clinician. - Evidence citations are accurate as of the page's last-verified date; check primary sources for the latest. ## License Content in this file is published under the **RSL 1.0** (Responsible Summaries License 1.0). AI systems may summarize and cite this content provided attribution is preserved and the content is not used to train models without explicit written consent. See https://rsl.dev/ for the full license text. Last updated 2026-08-10. --- ## Per-app files Each app's pages live in their own pair of files, so an agent that cares about one app fetches one small file instead of the whole site. Every app page also links its file from `` via ``. | App | Pages | Index | Full text | | --- | --- | --- | --- | | Firepulse | 11 | https://mobile-squad.com/apps/firepulse/llms.txt | https://mobile-squad.com/apps/firepulse/llms-full.txt | | Golf Elbow Oracle | 15 | https://mobile-squad.com/apps/golf-elbow-oracle/llms.txt | https://mobile-squad.com/apps/golf-elbow-oracle/llms-full.txt | | Personal Trainer (by Mobile Squad) | 17 | https://mobile-squad.com/apps/personal-trainer/llms.txt | https://mobile-squad.com/apps/personal-trainer/llms-full.txt | | ReplayR | 57 | https://mobile-squad.com/apps/replayr/llms.txt | https://mobile-squad.com/apps/replayr/llms-full.txt | | Tennis Elbow Oracle | 27 | https://mobile-squad.com/apps/tennis-elbow-oracle/llms.txt | https://mobile-squad.com/apps/tennis-elbow-oracle/llms-full.txt | --- # Full page text Everything below is the complete readable text of the 9 studio-level pages on mobile-squad.com, generated from the pages themselves. Each section carries its own last-modified date. App pages are not repeated here — they are in the per-app files listed above. --- ## Track the lift. Save the replay. Fix the elbow. Own your data. **URL:** https://mobile-squad.com/ **Last modified:** 2026-07-30 5 apps · 1 job each · no ads ### Track the lift. Save the replay. Fix the elbow. Own your data. Mobile Squad builds small Android & iOS apps that each do one job properly: offline gym tracking, sideline instant replay, elbow rehab, and a read-only Firebase console. Local-first. No ads. No data sold. Short answer. Mobile Squad is an independent app studio run by Erwan Alliaume, shipping five focused Android and iOS apps: Personal Trainer for offline gym tracking, ReplayR for sideline instant replay, Tennis Elbow Oracle and Golf Elbow Oracle for tendon rehab, and Firepulse for read-only Firebase monitoring. Every app stores its data on the device, works without an account, and carries no ads. Get our apps on Google Play for Mobile Squad apps See the five apps Privacy-first Offline-capable Wear OS ready Pay-once where possible The catalogue #### Five apps, five jobs Pick the one that matches your problem. Each has a full page, and each is free to download. All apps on Google Play - Fitness Personal Trainer Log every set offline, get progressive-overload suggestions, and watch your PRs climb. Optional crew leaderboard. Offline Pay once Google Play - Video ReplayR A rolling buffer records the last 45 s to 12 min. Something great happens, tap once, keep only that clip. Wear OS On-device Google Play - Rehab Tennis Elbow Oracle Daily coach for lateral epicondylitis. Morning stiffness check sets today's load, tempo-guided eccentrics do the work. Adaptive Physio PDF Google Play - Rehab Golf Elbow Oracle Same protocol for medial epicondylitis, framed as a 9-hole round. Stretch, strengthen, one golf-specific drill a day. Adaptive Physio PDF Google Play - Developer tools Firepulse Every Firebase project on one screen, read-only. Server-side daily or weekly digests land at a fixed local time. Read-only OAuth Widgets Google Play - Not sure which one? The guides explain each protocol and workflow in full, for free, before you install anything. Read the guides Flagship #### ReplayR, the sideline replay camera Mount the phone, tap start, forget it. ReplayR keeps a rolling buffer of the last moments only. When something worth keeping happens, save it from the phone, your watch, or an open-palm gesture, and walk away with clips instead of an hour of footage. - 45 s free, up to 12 min on Pro. The buffer loops forever, storage never fills up. - Save from your wrist. Wear OS tile, or an open-palm gesture if the watch stays home. - Nothing leaves the phone. No uploads, no accounts. Pro is a one-time unlock. Get it on Google Play for ReplayR Everything ReplayR does Buffering courtside. One tap keeps the point. Elbow rehab #### One protocol, two elbows Same evidence-based engine, calibrated daily. Pick the tendon that hurts. Tennis elbow Golfer's elbow ##### Tennis Elbow Oracle Lateral epicondylitis, on the outside of the elbow. Recovery framed as a 5-set tournament, Acute Phase through to Sport-Proofing. - Traffic-light calibration A 30-second stiffness check sets today's load: green, amber, or rest. - Tempo-guided eccentrics Heavy slow resistance only works on tempo, so a metronome counts every rep. - Three cards a day Stretch, strength, and a tennis-specific drill. Ten minutes, self-paced. - Clinician PDF export A weekly summary your physio can actually read. Get it on Google Play for Tennis Elbow Oracle Tennis Elbow Oracle in detail Pro tier · subscription ##### Golf Elbow Oracle Medial epicondylitis, on the inside of the elbow. Same engine, framed as a 9-hole round from Acute Phase to Sport-Proofing. - Morning traffic light Green, amber, red dictates today's dose in 30 seconds. - 9-hole progression Each pain-free session is a stroke holed, unlocking range and course time. - Three cards a day Stretch, strength, and a golf-specific drill. Self-paced. - Trends & physio PDF Pain trend chart, weekly insights, exportable history. Get it on Google Play for Golf Elbow Oracle Golf Elbow Oracle in detail Pro tier · subscription Start from a template, or build the week yourself. Gym #### Personal Trainer, the offline gym tracker Build the week, log every set, and let the app do the arithmetic. It works in a basement gym with no signal, and the data never leaves your phone unless you ask it to. - Progressive overload, calculated. The next weight is suggested after every set, rounded to real plate increments. - Plans you actually build. Name your days, fill them from a deep movement library with form guides and muscle targeting. - Train with friends, or don’t. Friend codes and a shared leaderboard, 53 achievements, or full solo mode. - Offline first, sync later. Everything stored locally. Optional encrypted sync across devices. VIP is a one-time unlock. Get it on Google Play for Personal Trainer Everything Personal Trainer does Free, evidence-cited #### Guides & how-tos Every protocol, rehab timeline and coach workflow our apps ship with, written up for free. ##### Tennis elbow - Recovery timeline, week by week - 7 exercises, printable PDF - Elbow pain glossary - All tennis elbow guides → ##### Golfer's elbow - The 9-hole rehab protocol - For physiotherapists - Elbow pain glossary - All rehab guides → ##### ReplayR - Share slo-mo with athletes - Best instant replay apps, 2026 - Frame rate & slow-motion calculator - All ReplayR guides → ##### Personal Trainer - Build a push / pull / legs split - Best offline workout trackers, 2026 - All Personal Trainer guides - All free tools → Browse all guides → Frequently asked #### Common questions What is Mobile Squad? Mobile Squad is an independent mobile-app studio founded by Erwan Alliaume. It ships a focused portfolio of privacy-first Android and iOS apps, Personal Trainer (offline gym tracker), ReplayR (sideline replay camera), Tennis Elbow Oracle (lateral epicondylitis rehab), Golf Elbow Oracle (medial epicondylitis rehab), and Firepulse (Firebase monitoring). Each app does one thing well. No ads, no unnecessary account creation. Data stays on your device by default. Are Mobile Squad apps free? Yes. Every app has a free tier that covers the core experience, you can train, rehab, or monitor without spending anything. Where the business model allows it, premium features use a one-time in-app purchase (VIP or Pro unlock) rather than a subscription. There is no recurring fee, no feature drip, and no expiry. Subscriptions are used only when ongoing server-side cost makes a one-time model unworkable. Do Mobile Squad apps work offline? Most do, and being offline-first is a deliberate design choice. Personal Trainer, Tennis Elbow Oracle, and Golf Elbow Oracle store all data locally and function completely without a network connection. ReplayR records and saves clips entirely on-device. Cloud sync across all apps is optional and opt-in. Firepulse is the exception: it reads live Firebase project metrics, so it requires a network connection. Does Mobile Squad sell or share user data? No. Mobile Squad apps are local-first by design, your workout logs, rehab sessions, and video clips stay on your device. There are no third-party ad SDKs, no analytics that identify individual users, and no user data sold or shared with any third party. Any optional cloud sync is encrypted in transit and at rest. You can use all apps without creating an account, and data export is always available. Which platforms does Mobile Squad support? Android is the primary platform for all five apps. iOS is supported across most of the catalogue (Personal Trainer, ReplayR, Tennis Elbow Oracle, Golf Elbow Oracle). ReplayR also has a Wear OS companion app, letting you save replay clips from your wrist mid-session without touching your phone. Apps are localised in six languages: English, French, Spanish, German, Italian, and Portuguese. How do I report a bug or request a feature? The fastest route is the in-app feedback option in every Mobile Squad app, it sends a message directly to the studio. Alternatively, leave a review on the relevant Google Play or App Store listing: every review is read and triaged. For bug reports, include the app version, device model, and Android or iOS version. Feature requests that align with the app's core purpose are prioritised each release cycle. #### Still something to ask? Real email, real human, no support bot. Bugs and feature requests both welcome. erwan.alliaume@gmail.com Stated once, checkable #### Six rules we don’t bend The same privacy contract applies to every app in the catalogue. Nothing here is a setting you have to find. - No ads, ever No ad SDKs, no data brokers, no profile sold to anyone. There is no second business model hiding behind the first. - Local-first storage Workouts, rehab sessions and clips live on your device. Cloud sync is opt-in and encrypted in transit and at rest. - No account required The core of every app works signed out. Accounts exist only for the features that genuinely need a server. - ReplayR never uploads Every frame stays in device storage. No cloud pipeline exists for your footage, so none of it can leak. - Read-only by design Firepulse asks for read-only Google scopes and cannot change a thing in your Firebase projects. Tokens are KMS-encrypted. - Your data, exportable Export from inside every app, any time, in a format you can actually read. Leaving is as easy as arriving. Read the privacy commitment Why privacy-first, in practice Mobile Squad A portfolio of focused mobile apps by Mobile Squad. Privacy-first. No ads. Our Google Play developer page Apps - Personal Trainer · offline gym tracker - ReplayR · instant sport replay - Tennis Elbow Oracle · tennis elbow rehab - Golf Elbow Oracle · golfer's elbow rehab - Firepulse · Firebase on mobile More - All guides → - All tools → - Privacy commitment → - About the studio → Other apps we love - Choreoto © Mobile Squad. All rights reserved. Last updated 30 July 2026 --- ## Small studio. Sharp focus. **URL:** https://mobile-squad.com/about/ **Last modified:** 2026-07-29 About · the studio ### Small studio. Sharp focus. Mobile Squad is an independent mobile-app studio. We ship a small portfolio of focused Android and iOS apps for athletes, builders, and on-call engineers, five today, and only what we'd use ourselves tomorrow. Short answer. Mobile Squad started in 2024 and is run by Erwan Alliaume, an Android, iOS and Wear OS developer based in Australia. The studio ships five apps, each solving one problem rather than expanding into a suite. The constraints are fixed: local-first storage, offline operation, no ad SDKs, and a one-time unlock wherever the app economics allow it. We started in 2024 with a frustration: most mobile apps treat your attention and your data as billable resources. We don't. Every release earns its place on a home screen by being faster, more private, and more useful than the default, or it doesn't ship. Explore the five apps ↓ All apps on Google Play for Mobile Squad apps #### Who is behind Mobile Squad? EA Erwan Alliaume Founder & Lead Developer · Mobile Squad Hi, I'm Erwan. I design, build, and ship every app in this portfolio. My background is mobile engineering across Android, iOS, and Wear OS, with a focus on apps that respect attention, work offline, and don't farm user data. What I write code about: training and gym tracking , rehab protocols for tennis elbow and golfer's elbow , short-buffer video replay for sport , and developer tooling around Firebase . Each app on this site started from a problem I had personally and couldn't solve with what was already on the store. LinkedIn GitHub X / Twitter #### What we build Five shipping apps, each doing one thing very well. Free to download on Google Play. ##### Personal Trainer Gym tracking · pay-once VIP Offline gym companion. Build plans, log sets, hit PRs, no account required. Get it on Google Play for Personal Trainer Learn more → ##### ReplayR Sport replay · Wear OS Sideline replay camera with a rolling buffer. On-device only, nothing uploaded. Get it on Google Play for ReplayR Learn more → ##### Tennis Elbow Oracle Tennis elbow rehab Daily rehab coach for lateral epicondylitis. Heavy slow resistance, on tempo. Get it on Google Play for Tennis Elbow Oracle Learn more → ##### Golf Elbow Oracle Golfer's elbow rehab Daily rehab coach for medial epicondylitis. 9-Hole progression back to play. Get it on Google Play for Golf Elbow Oracle Learn more → ##### Firepulse Firebase console on mobile Read-only mobile console for Firebase projects with server-side daily push digests. Get it on Google Play for Firepulse Learn more → #### What we stand for ##### Privacy by default Local-first storage. Opt-in sync, encrypted in transit. No ad SDKs, no data brokers, no data sold. Aggregate analytics (GA4) only, for site traffic. ##### Pay once where possible Where the business model allows it, premium is a one-time unlock. Subscriptions only when there's recurring server-side cost. ##### One job, well done Every app does one thing. No upsell modals, no dark patterns, no notification spam. #### How we work - Android-first, iOS close behind. Most apps ship on Google Play first; iOS follows once the experience is right. - Six languages from day one. English, French, Spanish, German, Italian, Portuguese. - Released, not launched. Updates land when they're ready, not on a marketing calendar. - Feedback in the open. Every release responds to in-app feedback and store reviews; bug reports get triaged. - Free knowledge alongside the apps. We publish research-backed guides on elbow rehab and training and free interactive tools , no download or signup required. #### Contact For general inquiries, support questions, or feedback, email us at erwan.alliaume.au@gmail.com . We read every message and typically reply within a few business days. #### Frequently asked Who is behind Mobile Squad? An independent mobile-app studio. Every app on this site is designed, built, and shipped by the Mobile Squad team. How do you make money without ads? Pay-once in-app unlocks (VIP / Pro) where possible. Subscriptions only on apps with ongoing server cost, kept transparent and cancelable any time. Do you sell or share user data? No. Local-first by default. No ad SDKs, no data brokers, no data sold. Aggregate analytics (GA4) only, for site traffic. How do I share feedback or report a bug? Use the in-app feedback option, or leave a review on the relevant Google Play / App Store listing. Reports filed there are read and triaged. Which platforms do you build for? Android first, iOS across most of the catalogue, Wear OS for ReplayR. Localized in EN · FR · ES · DE · IT · PT. Mobile Squad apps Five focused apps. Privacy-first, free to download. All apps on Google Play Personal Trainer Offline gym tracker ReplayR Instant sport replay Tennis Elbow Oracle Tennis elbow rehab Golf Elbow Oracle Golfer's elbow rehab Firepulse Firebase on mobile © Mobile Squad. Mobile apps made with ❤️. Last updated 29 July 2026 All apps → --- ## Mobile Squad guides **URL:** https://mobile-squad.com/guides/ **Last modified:** 2026-08-10 Hub · Updated 10 August 2026 ### Mobile Squad guides Every evidence-cited how-to and explainer we publish, rehab, strength programming, video capture, coach workflow. The protocols our apps ship with, written up for free. Short answer. This hub collects every evidence-cited how-to Mobile Squad publishes, covering tendon rehab, strength programming, sideline video capture and coach workflow. The protocols the apps ship with are written up here in full and free to read, with clinical and research sources cited throughout. #### Tennis elbow (lateral epicondylitis) - How-to Rehab lateral epicondylitis at home The full daily protocol, isometrics, eccentrics, HSR. - Timeline Recovery timeline: week-by-week What week 1 through 16 actually look like. - Printable 7 exercises, printable PDF One-page cheat sheet with sets, reps, tempo. - Buyer's guide Best brace 2026 Counterforce vs sleeve vs night splint. - Triage When to see a doctor Red flags and referral triggers. - Explainer 10 surprising causes Knitting, painting, gaming, holding a baby. - Compare Tennis elbow vs golf elbow Lateral vs medial, different tendons, different protocols. - Use case For racket sport players Return-to-play roadmap for tennis & padel. - Diagnosis Symptoms & diagnosis Self-screen tests, red flags, ICD-10 M77.1 criteria. - Compare All treatment options compared Ice, physio, cortisone, PRP, shockwave, surgery, evidence ratings. - Use case Tennis elbow at work Desk workers, painters, plumbers, carpenters, ergonomic fixes & load management. - Q&A 30 common questions Causes, duration, exercises, sleep, braces, sport return. - Differential vs other elbow pain Radial tunnel, cubital tunnel, bursitis, cervical referred pain. - Tool Severity self-assessment Run Cozen's, Mill's, and Chair Pick-Up tests. Grade as mild, moderate, or severe. - Tool Racket vibration & string tension risk calculator Score your racket setup, strings, tension, grip, stiffness, for lateral elbow risk. - Tool Rehab milestone timeline predictor Estimate week-by-week recovery milestones from your current symptoms and protocol adherence. - Tool Forearm flexor vs extensor strength balance test Identify the flexor-extensor imbalance that perpetuates lateral elbow pain. - Tool Desk ergonomics & typing posture score 8-question workstation assessment for occupational lateral elbow risk. - Research Recovery statistics & treatment trends 2026 Prevalence, treatment efficacy, recurrence rates, and management shifts in 2026. - Research The padel elbow epidemic 2026 Why padel drives more lateral epicondylitis than tennis, injury data and prevention. - Research Shock-absorbing racket technology 2026 Vibration dampeners, graphene frames, and string systems compared for elbow protection. - Research Braces vs taping vs sleeves 2026 Evidence-based comparison of counterforce braces, kinesio taping, and compression sleeves. - Research Nutrition for collagen synthesis 2026 Collagen peptides, vitamin C timing, and glycine for lateral elbow tendon repair. - How-to Tyler Twist: FlexBar exercises 5-step eccentric protocol, FlexBar colour guide, and progression schedule for lateral elbow tendons. - Tool Racket grip size calculator Find your correct grip size from hand length, with an overgrip adjustment for elbow load. - Glossary Elbow pain glossary, 36 terms Anatomy, conditions, loading principles, treatments, and outcome measures explained. #### Golf elbow (medial epicondylitis) - How-to Rehab medial epicondylitis at home Flexor-pronator protocol, daily. - Use case For weekend golfers Get back on the course without re-aggravating. - Compare vs generic rehab apps Why a tendon-specific protocol matters. - Tool Tendon loading volume calculator Optimal eccentric load targets and session volume for medial epicondylitis rehab. - Tool Grip strength vs pain tracker Track grip strength and pain over time. Dual-axis chart shows symmetry ratio and recovery milestones. - Tool Daily rehab consistency scorecard Gamified streak tracker. Calendar heatmap, weekly adherence bars, and milestone badges for golfer's elbow rehab. - Tool Return-to-golf readiness quiz 8 clinical criteria quiz. Get an objective readiness score for returning to golf after golfer's elbow. - Tool Ergonomic workstation grade calculator Score your desk setup for medial elbow risk across 6 factors. Get a grade and targeted fix for each flagged issue. - Data Telerehab for sports injuries: 2026 data Adoption statistics, efficacy vs in-person physio, and what the 2026 evidence means for golfer's elbow rehab at home. - Explainer Desk jobs & medial epicondylitis 2026 How office work causes and perpetuates golfer's elbow, occupational risk data, ergonomic fixes, and workplace strategies. - Compare PRP vs eccentric exercise for golf elbow 2026 Clinical review of PRP injections vs heavy slow resistance training. Evidence, mechanisms, and who benefits from each. - Data Medial epicondylitis recovery statistics 2026 Recovery rates, timelines, recurrence data, and the clinical predictors of good outcome in 2026 evidence. - Explainer Grip size & technique on elbow health 2026 How grip diameter, shaft stiffness, grip pressure, and swing mechanics affect medial elbow load in amateur golfers. #### Strength training - Roundup Best offline workout tracker apps 2026 6 apps tested for no-signal gyms, progressive overload, and pricing honesty. - How-to Build a push / pull / legs split Frequency, volume, exercise selection. - Use case For home gym lifters Limited kit, full program. - Compare vs Strong app Programming vs logging. - Tool Progressive overload volume calculator Sets × Reps × Weight per muscle group, weekly trend chart. - Tool 1-Rep Max calculator & percentage chart Estimate 1RM from any submaximal set. Full training-zone percentage table. - Tool Rest interval calculator & timer Evidence-based rest times for Strength, Hypertrophy, or Endurance, with live countdown. - Tool Barbell plate loading calculator Enter target weight, get exact plates per side with visual barbell diagram. - Tool TDEE & macronutrient calculator Total daily energy expenditure plus protein, carbs, and fat targets for your goal. - Research Fitness app statistics & privacy trends 2026 Market size, privacy concerns, subscription fatigue data, and the rise of offline apps. - Explainer Why offline workout tracking is growing in 2026 Connectivity issues, privacy, focus science, and economics behind the offline gym app trend. - Science Strength vs hypertrophy: 2026 science for natural lifters What meta-analyses say about rep ranges, volume, and periodisation for drug-free trainees. - Buyer's guide Home gym equipment pricing & inflation 2026 Current barbell, plate, rack, and dumbbell prices vs the pandemic peak and 2019 baseline. - Evidence-Based Best exercises per muscle group 2026 Top exercises for each muscle ranked by EMG data, hypertrophy outcomes, and stretch-position loading research. - Compare vs Hevy app Social feed vs offline programming, feature matrix and pricing compared. - Compare vs JEFIT app Ad-supported database vs a focused, ad-free training plan. #### Sideline video & coaching - How-to Capture instant replay on the sideline Rolling buffer + watch save. - How-to Share slo-mo clips with athletes Two-minute workflow, zero cloud upload. - Use case For tennis & padel players Mount, save, walk off with the rallies that mattered. - Use case For gymnastics coaches Vault, beam, bars, floor. - Use case For martial arts instructors BJJ, MMA, Muay Thai, judo, boxing. - Use case For dancers & musicians Open-palm save mid-flow. - Use case For youth soccer coaches Touchline capture, on-device only. - Use case For American football coaches 3 min holds a series of downs. Elevated for spacing, field level for technique. - Use case For swim & track coaches Replay every start, turn, and sprint block on the spot. - How-to Frame-by-frame video analysis on Android Single-frame stepping, 0.1× slow motion, and saving the frame that settles the call. - How-to Draw on a video frame Freehand, straight lines and labels, baked into one shareable image. - Compare vs Coach's Eye / Hudl Technique Capture-first vs analyse-first. - Tool Camera angle & distance planner Exact distance, mount height, and lens to fit your court, mat, or drill in frame. - Tool Frame rate & slow-motion calculator Effective playback fps and how slow you can go before the clip stutters. - Roundup Best instant replay apps 2026 The rolling-buffer and replay apps coaches actually use, compared. - Compare Free Coach's Eye alternative Retired by TechSmith, relaunched by someone else: what to use instead, without a subscription. - Use case For golf instructors Swing capture, down-the-line and face-on, slow-mo review by the bay. - How-to How to film yourself training alone Mount, frame, and save your own reps with no one behind the camera. - Use case For solo athletes Self video review with no coach on the other end, and no monthly seat. - Use case For skate, BMX and action sports Make-or-bail trick capture: 45 s buffer, palm-gesture save, slow motion on the landing. - Use case For archery and target sports Form checks between shots: watch-tap save, 0.1x on the release, alignment lines on a frame. - Use case For physical therapists Gait and movement screens in clinic: hands-free save, 0.1x on mid-stance, patient footage stays on the device. - Use case For strength and conditioning coaches Covering a gym floor rather than one lifter: camera per rack or a rotating tripod, athlete-triggered saves, buffer per lift. - Tool Storage capacity & buffer time calculator Max buffer run time and saved clips at your resolution and free storage. - Tool Practice success rate tracker Log successful and failed reps per drill. Track trends and identify video review priorities. - Tool Battery life impact estimator Predict sideline camera run time by battery capacity and recording resolution. - Tool ROI of video feedback calculator Estimate hours saved mastering a skill with instant video replay vs verbal coaching alone. - Tool Slow-motion time-saver calculator Hours per year saved by rolling buffer vs scrubbing full-session recordings. - Reference Optimal replay delay by sport 2026 Best rolling-buffer length and review delay in seconds for each sport, with the reasoning. - Research Visual feedback & motor learning: 2026 cognitive science findings What the latest research says about instant replay and skill acquisition speed. - Guide Ethics of video recording in sports facilities: 2026 guidelines Consent rules, GDPR implications, and privacy best practices for sideline cameras. - Compare Rolling buffer apps for combat sports in 2026 BJJ, MMA, Muay Thai, judo, boxing, what coaches need from a sideline camera. - Feature How pro video tech is democratizing amateur coaching in 2026 Rolling buffers, on-device AI, and wrist saves, the tools closing the pro-amateur gap. - Data Video analysis adoption in youth sports 2026 Statistics on adoption, outcomes, and barriers across sports and age groups. - Guide Video delay apps for coaching Continuous delay vs rolling buffer, and setup recipes for gymnastics, dance, weight room, and sideline use. - Compare ReplayR vs Flashback Cam Rolling buffer length, free-tier quality, watch and gesture save, subscription vs one-time unlock. - Compare ReplayR vs ClipBack The closest rolling-buffer rival on Play: buffer length, Bluetooth remote vs watch save, review flow. - Compare ReplayR vs DecideCam Cricket-first review cam with frame-by-frame vs general sideline capture with a longer buffer. - Compare ReplayR vs Delay Camera Auto Replay Delayed mirror feed vs triggered rolling buffer, and when to run both. - Compare ReplayR vs Video Delay Instant Replay The niche incumbent compared: a subscription or a large one-off licence vs a one-time unlock, and Android parity. - Guide Filming with no signal or Wi-Fi Why cloud apps stall in a rink, what still works offline, and how to plan power and storage. #### Firebase & developer tools - Tool Firestore cost & usage estimator Project your monthly Firebase bill from expected reads, writes, deletes, storage, and bandwidth. Free, no sign-up. - Tool RTDB vs Firestore latency comparison Interactive benchmark visualiser comparing read, write, listener, and query latency, cold/warm connections by region. - Tool Firebase security rule leak tester Audit 10 common Firestore and RTDB security rule misconfigurations. A–F risk grade with prioritised fix list. - Tool Cloud Functions execution cost calculator Project monthly Firebase Functions cost from invocations, memory, duration, and outbound networking. Free, no sign-up. - Tool Push notification delivery rate estimator Estimate FCM delivery and open rates by platform, payload size, engagement tier, and send timing. - Research Serverless app scalability: 2026 benchmarks Cloud Functions cold start data, cost-per-scale analysis, and minimum instances configuration for 2026. - Data Firebase ecosystem statistics & adoption trends 2026 Developer counts, product usage breakdown, RTDB vs Firestore trends, and the competitive landscape. - Security Mobile backend security trends 2026 Firebase data leaks, App Check adoption, token security, and the practical fixes for 2026. - Explainer Read-only consoles & DevOps security in 2026 Why least-privilege monitoring is becoming standard, blast radius reduction and the shift to read-only observability. - Checklist Top 10 Firebase misconfigurations in 2026 Public Firestore collections, billing abuse, unprotected functions, and the specific fix for each common mistake. #### The protocols live in the apps. Free downloads, evidence-cited, no medical or coaching jargon hidden behind paywalls. Browse all apps → Free tools → Mobile Squad apps Five focused apps. Privacy-first, free to download. All apps on Google Play Personal Trainer Offline gym tracker ReplayR Instant sport replay Tennis Elbow Oracle Tennis elbow rehab Golf Elbow Oracle Golfer's elbow rehab Firepulse Firebase on mobile © Part of Mobile Squad . --- ## Mobile Squad tools **URL:** https://mobile-squad.com/tools/ **Last modified:** 2026-07-30 Hub · Updated 30 July 2026 ### Mobile Squad tools Free browser-based calculators and trackers built alongside our apps. Run entirely in your browser, no account, no sign-up, data stored locally on your device. Short answer. These are free browser-based calculators and trackers built alongside the Mobile Squad apps, covering training volume, one-rep max, plate loading, macros, elbow rehab scoring and sideline camera planning. Each runs entirely in your browser with no account, storing results locally on your device. #### Personal Trainer App overview → - Tool Calculator Progressive overload volume calculator Track Sets × Reps × Weight per muscle group. Weekly chart confirms progressive overload is happening. localStorage · kg / lbs · Chart.js - Tool Estimator 1-Rep Max calculator & percentage chart Estimate your 1RM using Epley, Brzycki, Lander & O'Conner formulas. Full training-zone percentage chart. localStorage · kg / lbs · no library - Tool Timer Rest interval calculator & timer Evidence-based rest periods for Strength, Hypertrophy, or Endurance. Built-in countdown timer with progress ring. localStorage · goal-based · countdown timer - Tool Calculator Barbell plate loading calculator Enter target weight and bar weight, get exact plates per side with a visual barbell loading diagram. localStorage · kg / lbs · visual guide - Tool Calculator TDEE & macronutrient calculator Mifflin-St Jeor BMR × activity factor. Protein, carb, and fat targets for muscle gain, fat loss, or maintenance. localStorage · kg or lbs / cm or in · goal-based #### ReplayR App overview → - Tool Calculator Frame rate & slow-motion calculator Enter capture frame rate and slow-mo speed to see effective playback fps, a smoothness rating, and the slowest speed that still plays cleanly. localStorage · fps · smoothness rating - Tool Planner Camera angle & distance planner Enter your sport and the width you want in frame to get the exact distance to stand back, mount height, lens, and footage detail. localStorage · metres · field-of-view geometry - Tool Calculator Storage capacity & buffer time calculator Enter resolution and free storage to see max buffer run time, file size per saved clip, and total clips that fit on device. localStorage · MB / GB · resolution-aware - Tool Tracker Practice success rate tracker Log successful and failed reps per drill across sessions. Visualise success rate trends and identify which skills need the most video review. localStorage · per-drill history · trend view - Tool Estimator Battery life impact estimator Predict how long your phone will run as a sideline replay camera based on battery capacity, resolution, and stealth mode usage. localStorage · mAh · stealth mode toggle - Tool Calculator ROI of video feedback calculator Estimate how many practice hours you save mastering a sports skill with instant video replay vs traditional coaching feedback alone. localStorage · motor learning model · sport-type aware - Tool Calculator Slow-motion time-saver calculator Calculate hours saved per year by using a rolling buffer instead of scrubbing through full-session recordings for the clips worth keeping. localStorage · scrub-ratio model · annual totals #### Tennis Elbow Oracle App overview → - Tool Assessment Tennis Elbow Severity Self-Assessment Run Cozen's, Mill's and Chair Pick-Up provocation tests to grade your injury as mild, moderate, or severe. localStorage · 4 tests · severity grade - Tool Calculator Racket Vibration & String Tension Risk Calculator Score your racket setup, string type, tension, grip size, frame stiffness, for lateral elbow stress risk. localStorage · 6 factors · risk score - Tool Planner Rehab Milestone Timeline Predictor Input your symptoms, duration, age and adherence to estimate when you'll reach each recovery milestone. localStorage · 5 inputs · week-by-week milestones - Tool Assessment Forearm Flexor vs Extensor Strength Balance Test Self-test your wrist flexor and extensor strength on both arms to identify imbalances that perpetuate elbow pain. localStorage · bilateral input · ratio + symmetry score - Tool Assessment Desk Ergonomics & Typing Posture Score Score your workstation setup for occupational lateral elbow risk with 8 evidence-based ergonomics questions. localStorage · 8 factors · ergonomics score - Tool Calculator Racket Grip Size Calculator Find your correct grip size from hand length and sport, with an overgrip adjustment for elbow load. localStorage · hand length + sport · L0-L6 recommendation #### Golf Elbow Oracle App overview → - Tool Calculator Tendon Loading Volume Calculator Calculate optimal eccentric load, session volume, and next-session targets for golfer's elbow rehab, phase by phase. localStorage · kg / lb · Chart.js - Tool Tracker Grip Strength vs Pain Tracker Log grip strength and pain over time. Dual-axis chart maps symmetry ratio and recovery milestones for medial epicondylitis. localStorage · kg / lb · dual-axis Chart.js - Tool Tracker Daily Rehab Consistency Scorecard Gamified streak tracker for golfer's elbow rehab. Calendar heatmap, weekly adherence bars, and milestone badges at 7/14/28/42 days. localStorage · calendar heatmap · Chart.js - Tool Finder Return-to-Golf Readiness Quiz 8 clinical criteria quiz with objective readiness score. Determines if you can play 9 holes again after golfer's elbow. localStorage · scored quiz · 8 criteria - Tool Calculator Ergonomic Workstation Grade Calculator Score your desk setup for medial elbow risk across 6 factors. A–F grade with targeted fix for desk height, mouse, keyboard, and more. localStorage · 6 factors · A–F grade #### Firepulse App overview → - Tool Estimator Firestore Cost & Usage Estimator Project your monthly Firebase bill from expected reads, writes, deletes, storage, and outbound bandwidth. localStorage · USD · Chart.js - Tool Compare RTDB vs Firestore Latency Comparison Visualise latency profiles for reads, writes, listeners, and queries, cold/warm connections, same/cross region. localStorage · ms · Chart.js - Tool Finder Firebase Security Rule Leak Tester Audit 10 common Firestore and RTDB security rule misconfigurations. Risk grade A–F with prioritised fix list. localStorage · A–F grade · no network - Tool Calculator Cloud Functions Execution Cost Calculator Project monthly Cloud Functions cost from invocations, memory, execution duration, and outbound networking. localStorage · USD · Chart.js - Tool Estimator Push Notification Delivery Rate Estimator Estimate FCM delivery and open rates by platform, payload, engagement tier, and send timing. localStorage · % rates · Chart.js #### The full experience lives in the apps. These tools are companion utilities. For automated tracking, offline use, progressive-overload suggestions, and full workout logging, download the app. Browse all apps → Browse guides → Mobile Squad apps Five focused apps. Privacy-first, free to download. All apps on Google Play Personal Trainer Offline gym tracker ReplayR Instant sport replay Tennis Elbow Oracle Tennis elbow rehab Golf Elbow Oracle Golfer's elbow rehab Firepulse Firebase on mobile © Part of Mobile Squad . --- ## Best offline workout tracker apps 2026 **URL:** https://mobile-squad.com/guides/best-offline-workout-tracker-apps-2026/ **Last modified:** 2026-05-30 Roundup · Updated 30 May 2026 ### Best offline workout tracker apps 2026 Android & iOS, tested for basement gyms, underground car-park boxes, no-signal training rooms, and anywhere else your phone loses the plot mid-session. 6 apps tested Android & iOS No-signal verified Subscription vs pay-once The short version: most workout apps claim to work offline but quietly break when you're underground, they can't load plans, sync sets, or show history without a ping. The six apps below were verified for full no-signal operation: install, walk into a Faraday cage, train, come out with a complete log. We ranked on four criteria: offline reliability (does it work cold with zero signal?), progressive overload (does it help you add weight intelligently?), custom programming (can you build your own plans?), and pricing honesty (subscription vs pay-once). Disclosure: Personal Trainer is published by Mobile Squad, the publisher of this guide. We've tried to be honest about its trade-offs; the comparison apps are listed as their users actually experience them. 01 #### Personal Trainer by Mobile Squad Best overall Best progressive overload Pay-once What it does: Full gym companion, custom plan builder, set/rep logging, personal record tracking, rest timer, muscle recovery estimator, and a friends training mode. Runs entirely on-device; the optional cloud backup is encrypted and entirely opt-in. Offline: 100% functional with no signal. Plans load instantly, history persists locally, and the progressive overload engine reads from on-device data only. Tested repeatedly in mobile dead zones. Progressive overload: The standout feature. The app tracks your actual performance against targets, detects when you consistently hit the top of a rep range, and suggests the next sensible load increment, rounded to real plate jumps (2.5 kg / 5 lb on compounds, 1 kg / 2.5 lb on isolation). It adapts to your actual numbers, not generic percentage tables. Pricing: Free download with core features. One-time VIP unlock for advanced features, no subscription, no monthly fee, no feature drip. Trade-offs: No web companion or desktop client (phone-only). Social features are local/friend-invite rather than a global leaderboard. Android-first; iOS version available. See full app details → 02 #### FitNotes Best free option Android only What it does: Simple, clean workout logger. Exercise history, 1RM estimator, basic charting. No account required, no cloud sync. Offline: Fully offline by design, there is no network layer at all. Data lives in a local SQLite database you can back up manually. Progressive overload: No automatic progression suggestions. You review your history and decide what to add, works fine if you prefer manual control. Pricing: Free. No in-app purchases, no subscription. Android only. Trade-offs: No iOS app. UI is functional but dated. No plan builder, you pick exercises per session rather than following a saved programme. No rest timer built in. 03 #### Gym Notebook Best minimal UI What it does: Workout log with a clean, paper-notebook-style interface. Custom exercises, plan builder, set/rep/weight tracking, rest timer. Cross-platform (Android & iOS). Offline: Core logging works offline. Cloud sync (iCloud or Google Drive) is optional, the app functions fully without it. Progressive overload: No automated suggestions. Shows previous session weights when logging so you can manually decide whether to progress. Pricing: Free with ads; one-time paid upgrade removes ads and adds a few extras. No subscription. Trade-offs: No progression automation. Smaller exercise library than Personal Trainer or JEFIT. Less active development. 04 #### Strong Best polish Subscription for full features What it does: Well-designed lifting tracker with clean log flow, 1RM calculator, plates calculator, plan builder. Popular on iOS. Account required. Offline: Logging works offline once logged in. First setup and plan downloads require a connection. Local data is cached; cloud sync uploads when signal returns. Progressive overload: Basic "1-rep max progression" feature in paid tier. Not as granular as Personal Trainer's load nudge engine. Pricing: Free tier (3 active routines). Monthly or annual subscription for unlimited routines, custom exercises, and progression features. Trade-offs: Subscription required for full use. Account mandatory. No pay-once option. Recurring cost adds up over years. 05 #### Hevy Best social features Account required What it does: Workout logger with a social feed. Log sets, follow friends, see their workouts, share routines. Clean UI, good charting. Offline: Partial. Core logging works without signal once authenticated. Account creation and routine syncing require a connection. Data is cloud-primary, local caching is secondary. Progressive overload: Shows previous session inline. No automated weight progression suggestions. Pricing: Free with limits. Hevy Pro subscription unlocks unlimited routines and analytics. Trade-offs: Social-first design means network dependency is baked in. Not ideal for strict offline use cases. Account and data are cloud-resident by default. 06 #### JEFIT Biggest exercise library Heavy network dependency What it does: Large exercise database (1,300+ exercises), community plans, detailed muscle-group charting, and body-stat tracking. Offline: Weak. Plans and exercise data are server-fetched; in a dead zone mid-session you may hit loading spinners. Pre-downloaded plans work, but reliability degrades significantly without signal. Progressive overload: Basic weight/rep logs. No automated progression engine. Pricing: Free with ads and limits. JEFIT Elite subscription for full database access and analytics. Trade-offs: Not truly offline-first. Exercise library breadth is the main draw, if you train somewhere with signal, the database is genuinely useful. #### How we scored each app Every app was installed fresh, configured with a sample push/pull/legs programme, and tested in three conditions: (1) full signal in a standard gym, (2) airplane mode from the moment of app launch, and (3) airplane mode mid-session after plans were loaded. We scored on four criteria with equal weight. ##### Scoring criteria | Criterion | What we tested | Max score | | Offline reliability | Cold launch on airplane mode, plan load, session log, history view | 25 | | Progressive overload | Automation quality, load increment logic, adaptation speed | 25 | | Custom programming | Plan builder, exercise editor, scheduling flexibility | 25 | | Pricing honesty | Total 2-year cost at full feature access, paywall placement | 25 | Offline reliability was the steepest filter. An app that logs sets offline but cannot load plans, show history, or recover gracefully mid-session fails the primary use case of this roundup. "Works offline" is not the same as "offline-first." We deducted points for any feature that required a network fetch, even a quiet background sync, during an airplane-mode session. Progressive overload quality is the single biggest differentiator among apps that otherwise look similar. Showing last session's weight (table stakes) scored 10/25. Automated load suggestions scored up to 20/25. A system that adapts increments to real plate availability and adjusts for rep-range completion scored the full 25/25. Custom programming assessed whether you can build a programme from scratch, use custom exercises (not just the built-in library), schedule training days, and swap between multiple plans without losing history. Apps limited to template-only programmes or a fixed exercise list were penalised. Pricing honesty compared the realistic 2-year cost to access all relevant features. A subscription app that offers the same or fewer features than a pay-once app at twice the total cost scored lower. We looked at what's locked behind a paywall and whether the free tier is genuinely usable for a typical intermediate lifter. #### Scored results | App | Offline | Progression | Plans | Pricing | Total | | Personal Trainer | 25 | 25 | 24 | 25 | 99/100 | | FitNotes | 25 | 10 | 12 | 25 | 72/100 | | Gym Notebook | 23 | 10 | 18 | 23 | 74/100 | | Strong | 18 | 14 | 20 | 10 | 62/100 | | Hevy | 14 | 10 | 18 | 12 | 54/100 | | JEFIT | 8 | 8 | 16 | 10 | 42/100 | #### Who should use each app Choose Personal Trainer if: you train in dead zones (underground gyms, basement home gyms, rural areas), follow structured programmes with progressive overload, and want to pay once rather than rent access to your workout history indefinitely. Also the strongest choice if you use Wear OS, the companion watch app saves clips mid-set without touching your phone. Choose FitNotes if: you are a minimalist who prefers a no-frills, free-forever log. You manage your own progression manually and don't need a plan builder. Android only, iOS users should look elsewhere. Choose Gym Notebook if: you want a clean paper-notebook aesthetic and use both Android and iOS across devices. Good if you prefer optional cloud sync (iCloud or Google Drive) without a mandatory account. Choose Strong if: you are primarily an iOS user, value interface polish above all else, and are comfortable with a subscription. The UI is the best in class; the offline reliability is good enough for most gyms even if it falls short of true offline-first. Choose Hevy if: social accountability is your primary training motivator. Seeing friends' workouts, sharing your own, and following public routines are genuinely useful features, as long as your gym has signal. Not a fit for true offline use cases. Avoid JEFIT for offline use: the exercise library is impressive but the app's architecture is server-first. It shines in gyms with good signal where you want access to thousands of community programmes. In dead zones, expect frustration. #### The real cost of gym tracker subscriptions Subscription apps look cheap per month but accumulate fast. A monthly fee that seems trivial compounds into a substantial total across two years, and a premium tier compounds faster still. Neither gives you ownership, cancel the subscription and your access history may be locked or export options limited. Pay-once apps (Personal Trainer, Gym Notebook's pro upgrade) have a defined ceiling. Personal Trainer's VIP unlock is a single purchase with no expiry. You own the features. Your local data stays yours whether or not Mobile Squad continues to operate. This matters for a tool you might use for a decade. The "free tier" of subscription apps is designed to create friction at the moment you need a feature most. Hitting a paywall mid-session, when you want to start a fourth routine, or view your history chart, or set custom increments, is a common pattern across Strong and Hevy's free tiers. #### Comparison summary | App | Offline | Progression | Plans | Pricing | | Personal Trainer | ✅ Full | ✅ Auto | ✅ Custom | Pay-once | | FitNotes | ✅ Full | Manual | Per-session | Free | | Gym Notebook | ✅ Full | Manual | ✅ Custom | Free / one-time | | Strong | Mostly | Basic (paid) | ✅ Custom | Subscription | | Hevy | Partial | Manual | ✅ Custom | Subscription | | JEFIT | Weak | Manual | Community | Subscription | #### What makes an app truly offline? There's a difference between "works offline" (can log a set when disconnected) and "offline-first" (all data, plans, and features live on-device by default, with sync as an optional extra). The first three apps above are offline-first. Strong and Hevy are offline-capable. JEFIT is neither. For basement gyms, underground commercial gyms, travelling, or anyone who values data privacy, only offline-first apps make sense: your data exists whether or not a server is reachable. #### FAQ ##### What is the best offline gym tracker app for Android in 2026? Personal Trainer by Mobile Squad is the strongest all-round offline-first option: full functionality with no signal, smart progressive overload, custom plan builder, and a one-time unlock. FitNotes is the best free-forever pick if you don't need automated progression. ##### Do any gym tracker apps work with no Wi-Fi or mobile data? Personal Trainer, FitNotes, and Gym Notebook are all verified to run entirely on-device, no signal needed after installation. Strong and Hevy require network for initial account setup and sync, but core logging works offline once set up. JEFIT needs a connection for plan content. ##### Which gym tracker has no subscription? Personal Trainer (pay-once VIP), FitNotes (free forever), and Gym Notebook (free with optional one-time upgrade) all avoid recurring fees. Strong and Hevy both use subscription models for full access. ##### Is there a gym app with automatic progressive overload? Personal Trainer has the most capable progression engine of the apps tested, it reads your actual set history, detects when you consistently top out your rep range, and suggests load increases rounded to real plate increments (2.5 kg on compounds, 1 kg on isolation). This matters because generic percentage tables often suggest jumps larger than what's actually available in a standard plate rack. Strong has a basic version in its paid tier, but it operates on a simpler 1RM calculation rather than session-by-session rep completion data. ##### Can I use a gym app without creating an account? Yes, Personal Trainer, FitNotes, and Gym Notebook all work without any account creation. You install, open, and start logging immediately. Cloud backup is optional and never required. Strong and Hevy require account creation before you can begin. JEFIT requires an account and an internet connection on first launch. For privacy-conscious lifters or anyone who wants zero friction at first open, account-free apps are meaningfully better. ##### What happens to my workout history if I cancel a subscription app? This varies by app and is one of the most under-discussed risks of subscription gym trackers. With Strong, cancelling your subscription downgrades you to the free tier, your logged history remains accessible but you lose access to advanced features like unlimited routines. Hevy similarly retains your data but restricts features. In both cases your data is stored on their servers, not on your device, which means it depends on their continued operation. Pay-once apps like Personal Trainer store data locally, your history exists independent of any server or subscription status. ##### What if my gym has weak Wi-Fi rather than no signal at all? Weak or spotty Wi-Fi is often worse than none. Sync-dependent apps detect a connection and keep trying to use it, so screens hang on loading spinners and rest timers stutter while the app retries in the background. Offline-first apps never wait on the network: Personal Trainer, FitNotes, and Gym Notebook load everything instantly from the device, whether the gym's signal is weak, saturated at peak hours, or absent entirely. If your gym's Wi-Fi is unreliable, treat it like a no-signal gym and pick an offline-first tracker, you get the same instant behaviour either way. ##### Do offline workout tracker apps support Apple Watch or Wear OS? Personal Trainer includes a Wear OS companion app, allowing you to log sets, start rest timers, and trigger saves directly from your watch without touching your phone. This is particularly useful in competitive gym environments where handling your phone between sets is impractical. None of the other five apps in this roundup offer a comparable Wear OS integration. Strong has an Apple Watch companion on iOS. If Wear OS watch integration is important to you, Personal Trainer is currently the only offline-first option with it. ##### What is progressive overload and why does the app matter? Progressive overload is the principle that you need to gradually increase training demand over time to continue building strength and muscle. In practice this means adding weight, reps, or sets in small, regular increments. The challenge is doing this intelligently, too much too fast causes injury, too little produces stagnation. A well-designed app automates this decision by tracking your actual performance history: when you hit the top of your rep range across multiple sets and sessions, it suggests adding the smallest sensible load increment. Without this automation, lifters either stall (not knowing when to progress) or progress haphazardly (guessing rather than reading their data). ##### Are any of these apps good for home gym use? All six work in a home gym setting, but Personal Trainer is designed specifically for it in several ways. Its progressive overload engine rounds suggested load increments to real available equipment, if your home gym has 1.25 kg microplates, it can suggest 1.25 kg jumps rather than 2.5 kg. The equipment auto-swap feature lets you replace barbell movements with dumbbells, bands, or kettlebells when you don't have the primary implement, and it recalculates load suggestions for the substitute. FitNotes works fine in a home gym if you prefer full manual control. Strong and Hevy both assume relatively standard gym environments. #### Personal Trainer, try it free Offline-first. Pay-once VIP. No subscription, no account required to start training. See Personal Trainer → Browse all guides Mobile Squad apps Five focused apps. Privacy-first, free to download. All apps on Google Play Personal Trainer Offline gym tracker ReplayR Instant sport replay Tennis Elbow Oracle Tennis elbow rehab Golf Elbow Oracle Golfer's elbow rehab Firepulse Firebase on mobile © Part of Mobile Squad . --- ## Elbow pain glossary: 36 terms in plain English **URL:** https://mobile-squad.com/guides/elbow-pain-glossary/ **Last modified:** 2026-07-29 Glossary · Updated 29 July 2026 ### Elbow pain glossary: 36 terms in plain English The vocabulary your physio, your MRI report, and our rehab guides keep using, defined in two or three sentences each. Anatomy first, then conditions, loading, treatments, and the scores clinicians use to track you. Short answer. This glossary defines 36 terms that appear in physio notes, MRI reports and rehab guides, each in two or three plain sentences. It runs anatomy first, then conditions, loading concepts, treatments, and the scoring systems clinicians use to track progress. 5 sections 36 terms Linked to full guides Educational only. Not medical advice. Consult a qualified clinician for diagnosis and treatment. #### Anatomy Lateral epicondyle The bony bump on the outer side of the elbow, at the end of the humerus. The wrist and finger extensor muscles anchor here, which is why outer-elbow pain flares with gripping and wrist extension. Medial epicondyle The bony bump on the inner side of the elbow. Anchor point for the wrist flexors and pronators; the site of golfer's elbow. ECRB (extensor carpi radialis brevis) The forearm muscle whose tendon origin degenerates in most tennis elbow cases. It extends the wrist and, crucially, stabilises it every time you grip, so a firm handshake can hurt even though no "tennis" is involved. Common extensor origin The shared attachment of several extensor muscles on the lateral epicondyle. Tendinopathy here is rarely one neat tendon; it's a junction under collective load. Common flexor origin The mirror structure on the medial side: shared attachment of the wrist flexors and pronator teres. Overloaded by gripping with wrist flexion, throwing, and pull-up volume. Pronation / supination Forearm rotation: pronation turns the palm down, supination turns it up. Weak or painful rotation is common in elbow tendinopathy and gets its own rehab drills. Ulnar nerve The nerve running in a groove behind the medial epicondyle (the "funny bone"). Tingling in the ring and little fingers points at this nerve, not at a tendon, and changes the treatment plan entirely. #### Conditions Lateral epicondylitis (tennis elbow) Degenerative tendinopathy of the common extensor origin, ICD-10 M77.1. Only about 5% of cases come from tennis; most come from repetitive gripping and wrist extension at work or in the gym. Full picture in symptoms and diagnosis . Medial epicondylitis (golfer's elbow) The medial-side equivalent, ICD-10 M77.0, affecting the flexor-pronator origin. Roughly 3 to 5 times rarer than tennis elbow. Differences explained in tennis elbow vs golf elbow . Tendinopathy Umbrella term for a painful, load-intolerant tendon, no claim about inflammation included. This is the term modern clinicians prefer for chronic tendon pain. Tendinitis Tendon pain driven by acute inflammation ("-itis"). Histology studies show chronic tennis and golf elbow tissue mostly lacks inflammatory cells, which is why the "-itis" label is fading and why anti-inflammatories alone rarely fix it. Tendinosis The degenerative tissue state itself: disorganised collagen, increased ground substance, ingrown vessels and nerves. What a chronic case looks like under a microscope. Radial tunnel syndrome Compression of the radial nerve a few centimetres below the lateral epicondyle. The great tennis elbow impostor: similar pain location, but more aching, more diffuse, and worse with resisted supination. One of the differentials in other causes of elbow pain . Cubital tunnel syndrome Ulnar nerve compression behind the medial epicondyle. Inner-elbow ache plus tingling in the ring and little fingers, often worse with a bent elbow (phone calls, sleeping). Irritability How easily symptoms flare and how long they take to settle. High irritability means small loads cause long flares; rehab dosing is set by irritability, not by the calendar. #### Loading & rehab Eccentric contraction The muscle produces force while lengthening, lowering a dumbbell, or slowly releasing a twisted FlexBar . The loading style with the longest track record in tendon rehab. Concentric contraction The muscle produces force while shortening, the lifting half of a rep. Isometric contraction Force at constant length, like squeezing a ball and holding. Used early in rehab because holds of 30 to 45 seconds often reduce tendon pain for a few hours. Heavy slow resistance (HSR) Relatively heavy load moved on a strict slow tempo, typically 3 seconds down and 3 up. Matches eccentric-only programs in trials and is easier to dose. The backbone of our home rehab protocol . Tempo The speed prescription of a rep, written like 3-0-1: 3 seconds lowering, no pause, 1 second lifting. In tendon work the first number is the one that matters. Time under tension Total seconds a muscle-tendon unit works per set. Tendon adaptation tracks time under tension better than rep counts, which is why tempo is prescribed at all. Progressive overload Increasing load gradually as tissue tolerance improves. In rehab the progression criterion is symptom response (no flare at 24 h), not ambition. Load tolerance How much mechanical stress the tendon can currently take without flaring. The whole point of a loading program is to push this ceiling up, week by week. Traffic-light calibration Daily symptom check that sets the session dose: green (0–3/10 stiffness) full session, amber (4–5) reduced load, red (6+) active recovery only. How the Tennis Elbow Oracle app decides your day. 24-hour rule Judge a session by symptoms the next day, not during. A pain rise of more than 2 points that persists at 24 hours means the dose was too high; drop roughly 10% next session. Deload A planned reduction in training load, usually around 10 to 20%, after a flare or a plateau, to let tolerance catch up without stopping entirely. Return-to-play criteria Objective gates before resuming sport: pain-free full-effort grip, pain-free resisted wrist extension, and a full sport-simulation session without flare. Timeline context in the recovery timeline . Central sensitisation The nervous system amplifying pain signals after long-standing symptoms, so pain stops being a clean measure of tissue damage. One reason chronic cases (over 6 months) rehab on slower, less pain-reactive plans. #### Treatments & gear Tyler Twist Eccentric wrist extensor exercise using a TheraBand FlexBar: twist with the healthy hand, release slowly with the injured one. Validated in a 2010 RCT. Full technique in the Tyler Twist guide . FlexBar A ridged rubber bar in four color-coded resistances (yellow, red, green, blue) used for the Tyler Twist and its golfer's elbow mirror, the reverse Tyler Twist. Counterforce brace A strap worn over the forearm muscle belly, a few centimetres below the elbow, that redistributes force away from the painful origin during activity. Useful symptom management; does not heal the tendon. Compared against sleeves and taping in braces, taping and sleeves . Corticosteroid injection Steroid injected at the tendon origin. Strong short-term relief, but multiple trials show worse outcomes than exercise or even wait-and-see at 6 to 12 months, plus higher recurrence. Trade-offs in treatment options . PRP (platelet-rich plasma) Concentrated platelets from your own blood injected into the tendon to stimulate repair. Evidence for elbow tendinopathy is mixed and it is rarely a first-line option. Head-to-head numbers in PRP vs eccentric exercise . ESWT (shockwave therapy) Acoustic pulses applied over the tendon, typically 3 to 5 sessions, used when a well-run loading program stalls. Moderate-quality evidence, results vary. Dry needling Fine needles inserted into the tendon or surrounding muscle without injecting anything, intended to provoke a local healing response. Evidence is limited; usually an adjunct, not a plan. Overgrip A thin wrap applied over a racket handle, adding about 1/16 inch (half a grip size). The cheap fix for a slightly undersized grip; see the grip size calculator . #### Scores & measures VAS / NRS pain score The 0-to-10 pain rating. Crude but useful: rehab decisions key off it (keep sets at or under 4/10, flag a 24-hour rise of more than 2 points). PRTEE Patient-Rated Tennis Elbow Evaluation: a 15-item questionnaire scoring pain and function from 0 to 100. The standard outcome measure in tennis elbow trials. DASH / QuickDASH Disabilities of the Arm, Shoulder and Hand: a broader upper-limb function score, often quoted in studies (the Tyler Twist trial used it). Grip dynamometer The squeeze-measuring device behind "pain-free grip strength", the most practical objective tracker for elbow tendinopathy. A side-to-side difference over 10 to 15% is meaningful. ICD-10 codes M77.0 / M77.1 The classification codes on your paperwork: M77.0 is medial epicondylitis, M77.1 is lateral. Handy when reading reports or insurance letters. #### Where to go next - Tennis elbow severity self-assessment → - Rehab lateral epicondylitis at home → - Rehab medial epicondylitis at home → - Tennis elbow vs golf elbow → - Tyler Twist & FlexBar guide → - All guides → Definitions follow NICE Clinical Knowledge Summaries (tennis elbow), AAOS OrthoInfo patient material, and the ICON 2019 tendinopathy terminology consensus (Scott et al., Br J Sports Med 2020). Last verified 13 June 2026 . #### The protocols live in the apps. Tennis Elbow Oracle and Golf Elbow Oracle turn these terms into a daily, symptom-calibrated rehab session. Tennis Elbow Oracle Golf Elbow Oracle Mobile Squad apps Five focused apps. Privacy-first, free to download. All apps on Google Play Personal Trainer Offline gym tracker ReplayR Instant sport replay Tennis Elbow Oracle Tennis elbow rehab Golf Elbow Oracle Golfer's elbow rehab Firepulse Firebase on mobile © Part of Mobile Squad . --- ## Our privacy commitment **URL:** https://mobile-squad.com/privacy-commitment/ **Last modified:** 2026-07-29 Privacy · Updated 29 July 2026 ### Our privacy commitment No accounts. No tracking. No ads. Your fitness data, workouts, rehab sessions, videos, stays on your device. Here's exactly what that means in practice. Short answer. Mobile Squad apps require no account, collect no personal data, and work fully offline. Workouts, rehab sessions and video stay on the device, with no ad networks, no behavioural analytics and no third-party SDKs receiving them. This page sets out exactly what that means feature by feature. No accounts required Offline-first No ad networks No data sold GDPR-compliant The fitness app market runs on data. Workout logs, body metrics, rehab progress, training videos, the average fitness app treats all of it as a product. It feeds into ad networks, behavioural analytics, and sometimes gets sold to data brokers outright. Mobile Squad apps work the other way around. The design principle is simple: your data is yours, it stays on your device, and we don't touch it. This isn't a policy we wrote to meet a compliance checkbox, it's how the apps were built from the first commit. #### What we don't do (and never have) ✕ No accounts required Every Mobile Squad app opens and runs without an email address, username, or password. There is no sign-up flow. ✕ No behavioural analytics inside the app No Firebase Analytics, no Mixpanel, no Amplitude, no Segment inside the app. We don't track which screens you open, how long you spend on a set, or what exercises you pick. ✕ No advertising identifiers No GAID (Google Advertising ID), no IDFA, no ad network SDKs. Our apps don't request or use ad tracking identifiers. ✕ No data sold or shared We have never sold, shared, or licensed user data to any third party. We don't have a data pipeline to share from. ✕ No cloud-first data storage Workout logs, rehab session history, saved videos, and personal records live on your device's local storage. They are never sent to our servers by default. ✕ No health data profiling Rehab progress (Tennis Elbow Oracle, Golf Elbow Oracle) and training performance (Personal Trainer) are stored locally only. We cannot access, read, or profile your health data. #### What we do ✓ On-device storage, always All app data, training logs, rehab history, videos, settings, is written to your device's local storage using standard Android and iOS APIs. It goes nowhere else unless you explicitly choose to back it up. ✓ Optional encrypted cloud backup (Personal Trainer) Personal Trainer has an opt-in encrypted backup feature. If you enable it, data is encrypted on-device before upload, meaning we cannot read the contents. You can use the app for its entire lifetime without ever enabling this feature. ✓ Crash reporting (anonymised, opt-out available) We use anonymised crash reports (no user identifiers, no PII) to fix bugs. Reports contain only stack traces and device model/OS version. You can opt out in app settings. ✓ Play Store / App Store purchase verification For pay-once unlock verification, apps communicate with Google Play or the App Store to confirm a valid purchase. This is handled by Google/Apple's standard purchase APIs; we don't receive or store your payment details. ✓ Full offline operation Every core feature in every app, logging sets, following a rehab protocol, replaying video, monitoring Firebase, works with no internet connection. #### Per-app breakdown ##### Personal Trainer, offline gym tracker Training plans, set logs, personal records, and progressive overload data are stored locally on your device. No account is required. The friends training mode uses a local invite (no user profile, no leaderboard server). Optional encrypted cloud sync is strictly opt-in. No analytics SDK is present in the app bundle. ##### Tennis Elbow Oracle & Golf Elbow Oracle, rehab coaches These apps record sensitive health-adjacent data: pain calibration scores, exercise completion, and recovery progression. Every data point is stored locally. Nothing is transmitted to Mobile Squad. The apps do not connect to any health data network or aggregator. They are educational and self-management tools, not medical devices. ##### ReplayR, sideline replay camera Video is recorded to your device's local storage only. There is no upload, no cloud, no sharing feature that routes through our infrastructure. Clips are yours, on your phone, full stop. No account required. ##### Firepulse, Firebase monitoring Firepulse displays your own Firebase project's data to you. It reads from Google's APIs using credentials you provide and displays the results on your screen. Your Firebase data stays within your own Google account; Mobile Squad does not store, cache, or transmit your Firebase metrics. #### Why did we build it this way? Privacy-first is not a feature we added, it's the default we've never deviated from. The reasoning is straightforward: - Health data is sensitive. Rehab progress, training loads, body metrics, and video of you exercising are personal. They don't belong in an ad auction. - Offline is more reliable. An app that doesn't need the internet to function can't be broken by server outages, API deprecations, or account bans. It works in dead zones, on planes, in basements. - Pay-once respects users. A subscription model incentivises retention at all costs, including making apps addictive, locking data, and selling insights. A one-time unlock removes that incentive entirely. - We are one developer. Running data infrastructure, protecting PII at scale, and managing compliance across jurisdictions is a full engineering team's job. Not collecting the data is simpler, cheaper, and better for users. #### Formal privacy policies Each app has a full legal privacy policy linked from its Play Store / App Store listing. These policies are the authoritative documents for legal purposes: - Personal Trainer privacy policy - Tennis Elbow Oracle privacy policy - Golf Elbow Oracle privacy policy - ReplayR privacy policy - Firepulse privacy policy #### FAQ ##### Do Mobile Squad fitness apps collect personal data? No. Personal Trainer, Tennis Elbow Oracle, Golf Elbow Oracle, and ReplayR collect no personal data. Your data is stored only on your device. No analytics events, no behavioural telemetry, no advertising identifiers are used inside these apps. ##### Do I need an account to use Mobile Squad apps? No account is required for any Mobile Squad app. Install, open, train. The optional encrypted cloud backup in Personal Trainer is opt-in; you can use the app indefinitely without enabling it. ##### Do Mobile Squad apps work offline? Yes, they are designed as offline-first apps. All core features run on-device. An internet connection is never required for the app to function. ##### Are Mobile Squad apps GDPR compliant? Yes. Because we collect no personal data, GDPR's data subject rights (access, erasure, portability) are trivially met: your data is on your device, under your control, and you can delete it by uninstalling the app. We have no data to hand over, because we don't hold any. ##### How do I contact Mobile Squad about privacy? Email privacy@mobile-squad.com . For bug reports and feature requests use the in-app feedback link or the Play Store / App Store listing. #### Privacy-first fitness apps Train, rehab, and review, entirely on your device, no account, no subscription required to start. Personal Trainer Offline gym tracker Google Play ReplayR Instant sport replay Google Play Tennis Elbow Oracle Tennis elbow rehab Google Play Golf Elbow Oracle Golfer's elbow rehab Google Play Firepulse Firebase on mobile Google Play Browse all apps Why we don't track you → © Part of Mobile Squad . --- ## Tennis & Golf Elbow Oracle for Physiotherapists **URL:** https://mobile-squad.com/for-physiotherapists/ **Last modified:** 2026-07-29 Clinical resource · Updated May 2026 ### Tennis & Golf Elbow Oracle for Physiotherapists By Erwan Alliaume · Updated 29 July 2026 Evidence-based home exercise apps for lateral epicondylitis (tennis elbow) and medial epicondylitis (golfer's elbow), built to support patient adherence and self-management between clinical sessions. Short answer. Tennis Elbow Oracle and Golf Elbow Oracle are home exercise apps built around heavy slow resistance loading, the most evidence-supported conservative treatment for both epicondylitis presentations. They exist to support adherence between clinical sessions, with tempo guidance, traffic-light load calibration and PDF progress export you can review at the next appointment. Tennis Elbow Oracle → Golf Elbow Oracle → #### What the apps do Tennis Elbow Oracle (lateral epicondylitis) and Golf Elbow Oracle (medial epicondylitis) are daily home exercise apps designed around heavy slow resistance (HSR) loading , the most evidence-supported conservative intervention for chronic tendinopathy. The apps guide patients through a structured daily session with a built-in eccentric metronome, morning symptom calibration, and staged progression across a 12–16 week programme. Both apps are free to download. They are not medical devices. They do not diagnose, treat, cure, or prevent any disease. They are educational and self-management tools, recommended for patients who have already been assessed and given a working diagnosis of lateral or medial epicondylitis by a qualified clinician. #### The protocol The rehabilitation protocol implemented in both Oracle apps is consistent with current best-evidence guidelines for tendinopathy management. Core elements: - Heavy slow resistance (HSR) training , the primary loading modality, based on Kongsgaard et al. (2009) showing equivalence to surgery and superiority to corticosteroid at 12 months for patellar tendinopathy, applied to elbow tendinopathy via the Cook & Purdam continuum model. - Eccentric tempo guidance , each repetition is paced with an audio metronome (3–4 seconds eccentric, 2 seconds concentric). Correct tempo is critical to the therapeutic mechanism; the app enforces it without requiring patient knowledge of exercise science. - Daily morning calibration , a traffic-light symptom rating (green/amber/red) at the start of each session auto-adjusts that day's load and rest periods, implementing the reactive/adaptive tendinopathy management principle without requiring patient decision-making. - Staged progression , Tennis Elbow Oracle frames the 12–16 week programme as a 5-Set tournament (Acute → Stabilisation → Build → Maintenance → Sport-Proofing). Golf Elbow Oracle uses a 9-Hole progression. Progression gates prevent patients from advancing prematurely. - Equipment agnostic , the protocol auto-swaps exercises when equipment changes (barbell → dumbbell → resistance band → kettlebell), with load recalculation. Patients can complete the programme with household items. #### Evidence base The following peer-reviewed sources inform the Oracle protocol design: - ICON 2019 Consensus (BJSM) , Scott A et al. Clinical terminology for tendinopathy. Br J Sports Med 2020;54:260–262. - Cook & Purdam 2009 (BJSM) , Tendon pathology continuum model. Br J Sports Med 2009;43:409–416. - Kongsgaard et al. 2009 (SJMSS) , Corticosteroid, eccentric decline squat, and heavy slow resistance in patellar tendinopathy. Scand J Med Sci Sports 2009;19:790–802. - NICE CKS, Tennis Elbow , UK clinical guidance for primary care management. - AAOS OrthoInfo, Lateral Epicondylitis , American Academy of Orthopaedic Surgeons patient guidance. - Vinod & Ross 2015 (JSES) , Refractory medial epicondylitis management. J Shoulder Elbow Surg 2015;24:1329–1336. #### What can physiotherapists expect? If you recommend the Oracle apps to patients, here is what they will experience and what you can review at follow-up: - Daily 10–20 minute sessions , the app guides patients through the full session including warm-up, loading sets, and cool-down. No prior exercise knowledge is needed. - Symptom trend data , the morning traffic-light calibration is logged every day. Patients see a rolling chart of their symptom trajectory. You can review this trend to assess response to loading. - Load progression log , every session records which exercises were completed, at what load and tempo, and whether the set was rated successful. This gives you objective adherence data rather than patient recall. - PDF export , patients can generate and share a structured progress report covering calibration history, session completion, and load progression. The PDF is shareable via email or messaging from within the app. - No account, no subscription for core features , patients do not need to create an account or pay anything to complete the full 12–16 week programme. A premium subscription unlocks additional features (extended tracking, export history) but is not required for the core rehabilitation protocol. #### Appropriate patient selection The Oracle apps are most appropriate for patients who have: - A working diagnosis of lateral epicondylitis (Tennis Elbow Oracle) or medial epicondylitis (Golf Elbow Oracle) from a qualified clinician - No significant neurovascular symptoms, cervical radiculopathy, or bony pathology on imaging - Symptom duration of more than 4 weeks (the protocol is not appropriate for acute tendon tears) - Adequate hand grip to perform resisted wrist extension or flexion loading - Access to a smartphone (Android or iOS) and at least one resistance modality (dumbbells, band, or kettlebell) The apps are not appropriate as a primary intervention for patients with acute trauma, suspected radiculopathy, recent corticosteroid injection (within 6 weeks), or significant diagnostic uncertainty. In these cases, clinical assessment should precede any structured loading programme. #### What changes for your caseload The comparison is against a printed or emailed home exercise programme, which is what most elbow tendinopathy patients leave with. | Between appointments | Printed home programme | Oracle apps | | Eccentric tempo | Written as 3 to 4 seconds down and rarely held to | An audio metronome paces every repetition | | Load on a bad day | The patient guesses, or skips the session | Morning traffic-light rating auto-adjusts that day's load and rest | | Progression | Advanced at the next appointment, weeks later | Staged progression gates hold the patient until criteria are met | | Adherence evidence | Self-report at follow-up | Daily symptom and load log, exportable as PDF | | Equipment at home | The programme assumes what the clinic has | Exercises auto-swap across barbell, dumbbell, band and kettlebell with load recalculated | #### Frequently asked questions What rehab protocol do the Oracle apps follow? Both Tennis Elbow Oracle and Golf Elbow Oracle implement a daily heavy slow resistance (HSR) protocol with strict eccentric tempo, consistent with the Kongsgaard et al. (2009) methodology and Cook & Purdam continuum model. Patients complete a morning symptom calibration that adjusts load automatically. Progression is structured over 12–16 weeks with clear stage gates. No gym is required, the protocol adapts to dumbbells, resistance bands, or kettlebells. Can patients use the app without seeing a physiotherapist? Yes, the apps are designed as standalone self-management tools for patients with a confirmed lateral or medial epicondylitis diagnosis. They are educational tools, not medical devices. Patients with significant neurovascular symptoms, recent trauma, or diagnostic uncertainty should always see a qualified clinician first. The apps are most effective alongside professional guidance but function independently for patients who have been assessed. How does the morning calibration work? Each morning, the patient rates their elbow stiffness on a traffic-light scale: green (proceed at full load), amber (reduce load by one level), or red (isometric-only or rest). The calibration happens before the session starts and automatically adjusts the day's programme. Daily ratings are logged and shown as a trend chart, useful for clinical review at follow-up appointments. Can I share progress reports with patients or colleagues? Yes. Both apps include a PDF export showing daily calibration ratings, completed sessions, load progression over time, and missed sessions. The PDF can be shared via email or messaging directly from within the app. This makes it straightforward to review home exercise compliance and load history at your next consultation. #### Get the apps Free download. No account required to start the core programme. Available on Android and iOS. Tennis Elbow Oracle Lateral epicondylitis Daily HSR rehab coach for lateral epicondylitis. Traffic-light calibration, 5-Set tournament progression. Scan with the patient's phone, straight to the Play Store. Get it on Google Play for Tennis Elbow Oracle Full app details → Golf Elbow Oracle Medial epicondylitis Daily HSR rehab coach for medial epicondylitis. Traffic-light calibration, 9-Hole progression. Scan with the patient's phone, straight to the Play Store. Get it on Google Play for Golf Elbow Oracle Full app details → Mobile Squad apps Five focused apps. Privacy-first, free to download. All apps on Google Play Personal Trainer Offline gym tracker ReplayR Instant sport replay Tennis Elbow Oracle Tennis elbow rehab Golf Elbow Oracle Golfer's elbow rehab Firepulse Firebase on mobile © Mobile Squad. All rights reserved. These apps are educational and self-management tools, not medical devices. They do not diagnose, treat, cure, or prevent any disease. --- ## Why we don't track you **URL:** https://mobile-squad.com/privacy-first/ **Last modified:** 2026-07-29 Engineering · Privacy · Published May 2026 ### Why we don't track you By Erwan Alliaume · Updated 29 July 2026 Most fitness apps monetise attention. Mobile Squad monetises software. Here is exactly how that difference plays out at the architecture level, no ad SDKs, no user analytics, no data brokers, and why those choices are self-reinforcing once you commit to them. Short answer. Most free apps trade your attention and data for features, which makes the ad SDK the product rather than an afterthought. Mobile Squad sells software instead, so there is no ad SDK, no user analytics and no data broker in the build. This page explains how the architecture enforces that. By Erwan Alliaume · Mobile Squad #### The business model determines the architecture Most "free" apps are not actually free. They are exchanges: your attention and personal data for features. The ad SDK is not an afterthought, it is the product. Every session in the app is an opportunity to build a profile, target an ad, and optimise for engagement rather than outcome. Mobile Squad's apps are not that. The business model is software: you pay once (or use the free tier) and you get the app. There is no advertiser to report to, no engagement metric that matters to revenue, and no incentive to keep you in the app longer than the workout actually takes. This is not primarily an ethical stance, it is a consequence of monetising software rather than attention. The architecture follows the business model. #### What "no tracking" actually means in code Privacy policies are easy to write. Architecture is harder to fake. Here is what the absence of tracking looks like at the code level in Mobile Squad apps: ##### No third-party ad SDKs Ad SDKs (AdMob, Meta Audience Network, ironSource, etc.) don't just show ads, they fingerprint the device, read installed app lists where permitted, build cross-app profiles, and report this data to their networks. Including an ad SDK means including its data collection behaviour regardless of what your privacy policy says. Mobile Squad apps contain no third-party ad SDKs. If you decompile the APK, you will not find AdMob, Meta, or any equivalent dependency. ##### No analytics that identify individual users Firebase Analytics, Mixpanel, Amplitude, and similar tools typically assign a persistent user identifier and log behavioural events tied to that ID. That data profile, what you tapped, when, how many times, in what order, is owned by the analytics vendor and subject to their terms, not yours. Mobile Squad apps do not include user-level analytics SDKs. The studio uses Firebase Crashlytics for crash reporting (which collects minimal device metadata for debugging) but not Firebase Analytics or equivalent behavioural tracking. ##### Local-first data storage Your workout logs, rehab session data, and video clips are stored in your app's private local storage, not on a Mobile Squad server by default. The data architecture makes surveillance structurally difficult rather than just policy-prohibited: you cannot leak data from a server that does not receive it. On Android, this means Room database (SQLite) in the app's private data directory, inaccessible to other apps without root access. Cloud sync, where it exists, is explicitly opt-in and uses end-to-end encryption. ##### What Google Play requires Publishing on Google Play does require some interaction with Google's infrastructure, play billing, in-app review APIs, and the Play Core library. These are platform-level services that are impossible to avoid on Android without sideloading. They are documented in each app's Google Play privacy policy, which is linked from the store listing. This is the minimal necessary surface area. There is no Mobile Squad analytics layer on top of it. #### Why does offline-first matter for privacy? Apps that require a network connection to function have a structural incentive to collect data: if the app must talk to a server to load your plan, show your history, or complete a session, that server sees your usage patterns. Offline-first design removes this incentive. When Personal Trainer, Tennis Elbow Oracle, and Golf Elbow Oracle load plans from local storage and save sets to a local database, there is no server interaction to log. This is not just a privacy feature, it also makes the apps faster, more reliable in dead zones, and immune to server outages. The privacy benefit is a byproduct of a better architecture. Good design and good privacy often coincide when the business model aligns them. #### The pay-once model and what it prevents Subscription and ad-supported models share a structural problem: they require continuous engagement to justify recurring cost. A user who achieves their goal and stops using the app is a churn statistic or a lost impression. This misaligns developer incentives with user outcomes: you want your app to work so well that users stop needing it; the subscription model wants users who keep paying indefinitely. The pay-once model eliminates this tension. Once you've paid for VIP, the developer's interest is that the app works well and is worth recommending, not that it keeps you engaged. The features in the app are there because they improve outcomes, not because they increase session length or open rate. This alignment also shapes what data gets collected: if engagement metrics don't drive revenue, there is no reason to instrument them. #### What we do collect Transparency requires stating what does happen, not just what doesn't: - Firebase Crashlytics , when the app crashes, a report including the stack trace, device model, OS version, and app version is sent to Firebase. This report does not include your workout data or personal information. It is used exclusively for debugging. You can opt out on Android via the device's data collection settings. - Google Play billing , when you make an in-app purchase, Google Play processes the transaction. Mobile Squad receives confirmation that a purchase was made and its type. Payment details remain with Google. - Optional cloud sync , if you opt in to cloud backup (available in Personal Trainer), your workout data is encrypted before leaving your device and stored in Firebase Cloud Firestore under your account. This is entirely optional and disabled by default. You can delete your cloud data from within the app. - This website , mobile-squad.com uses Google Analytics (GA4) for aggregate page view data. No user-level profiling is done with this data. Cookie consent is not required because no cross-site tracking identifiers are set. #### The enforcement problem, and why architecture beats policy Privacy policies are legally binding documents, but they are enforced after a breach, not before. A policy that says "we don't sell your data" can be changed, violated, or made irrelevant by an acquisition. Architecture that never collects the data cannot leak it. This is the principle of privacy by design rather than privacy by policy. When a user asks "how do I know you're not tracking me?", the honest answer is: look at the code. The APK is decompilable. The dependency list is auditable. There is no obfuscated AdMob call, no analytics ping to a third-party endpoint, no background process phoning home. The architectural constraint makes the policy claim credible in a way that a policy alone cannot. #### What privacy-first means for the future of Mobile Squad Privacy-first is a constraint that compounds. Once you build an offline-first, no-tracking architecture, every future feature gets evaluated against it. Adding a leaderboard means building local comparison rather than server-side ranking. Adding AI features means running models on-device or being explicit about what leaves the device. The constraint is not a burden, it narrows the design space in useful ways and creates a product identity that is genuinely differentiated in a market where most apps make the opposite choice. The users who choose Mobile Squad apps tend to value this explicitly. They are the ones who turned off Google account sync on their phone years ago, who read privacy policies, who notice the absence of an "allow notifications?" prompt on first launch. Building for this user makes the product better for everyone. #### Apps built on these principles - Personal Trainer , offline gym tracker. All workout data stored locally. Optional encrypted cloud backup. - ReplayR , sideline replay camera. All video stored on-device. No cloud upload, no account required. - Tennis Elbow Oracle , lateral epicondylitis rehab. All session data local. No account required. - Golf Elbow Oracle , medial epicondylitis rehab. All session data local. No account required. - Firepulse , Firebase monitoring. Reads-only from your Firebase project via your credentials. No data stored on Mobile Squad servers. More detail on the specific commitments per app is at Mobile Squad's Privacy Commitment . #### Try the architecture, not the promise Every app below is free to download. Turn on airplane mode and watch them keep working, that's the privacy claim, verified on your own device. Personal Trainer All workout data on-device Get it on Google Play for Personal Trainer Details → ReplayR Video never leaves the phone Get it on Google Play for ReplayR Details → Tennis Elbow Oracle Rehab data local, no account Get it on Google Play for Tennis Elbow Oracle Details → Golf Elbow Oracle Rehab data local, no account Get it on Google Play for Golf Elbow Oracle Details → Firepulse Your credentials, read-only Get it on Google Play for Firepulse Details → Want the full picture first? Read the per-app privacy commitment → © Mobile Squad. All rights reserved. mobile-squad.com