Skill-length buffer, not session-length
A vault is 5–8 s, a beam mount + dismount sequence 15 s, a tumbling pass 4–6 s. The 45 s rolling buffer keeps the whole skill in memory without saving the 2-hour training session.
TL;DR. A vault is 5–8 seconds from runway to landing. A tumbling pass is 4–6. A bar release is 1 second. The 45-second free buffer catches the entire skill plus the run-up. Mount the phone, tap save between turns, walk it to the gymnast, they see the rep before the next one starts. On-device only: no cloud upload, no minor's footage leaving the gym.
A vault is 5–8 s, a beam mount + dismount sequence 15 s, a tumbling pass 4–6 s. The 45 s rolling buffer keeps the whole skill in memory without saving the 2-hour training session.
Switch to the 90 s buffer (or Pro 3 min) for full beam, floor, or bars routines. Save once at the end and the entire routine is on the phone before the next gymnast salutes.
Save → walk → show. No tablet, no SD card, no "I'll send it later." The coaching cue lands while the kinaesthetic memory is still warm.
Footage stays on the device. Critical for under-18 athletes, GDPR-conscious clubs, and parents who don't want their kid's training videos in a third-party bucket.
45 s covers any single skill. Use 90 s buffer for full routines (beam ~70–90 s, floor 60–90 s). Pro 3 min handles championship-level routines with overrun.
Yes, that's the point. Save → walk → show. The feedback loop closes before the next attempt.
Audio records by default, useful for the 'go' command and landing thump. Disable in settings for noisy gyms. Already saved a clip you would rather send without sound? Open it, tap Edit, and switch the Audio row to muted (Pro), the audio track is stripped from the file when you confirm, so the shared MP4 carries no sound at all.
Yes, ReplayR is on-device only. Nothing uploads. Coach controls who the phone is shown to and when clips are deleted.
| Criterion | ReplayR | Coach's Eye | Dartfish Express |
|---|---|---|---|
| Price | Pay once, keep forever | Monthly subscription | Monthly subscription |
| Works offline in gym | ✓ Fully offline | ✗ Requires internet | ✗ Requires internet |
| Instant replay (no save needed) | ✓ Rolling buffer | ✗ Must save first | ✗ Must save first |
| Slow-motion playback | ✓ Included | ✓ Included | ✓ Included |
| Video annotation | ✓ On a frame (Pro) | ✓ Drawing tools | ✓ Drawing tools |