ReplayR

ReplayR loops over the last 45 or 90 seconds (3, 6, or 12 minutes on Pro). Older footage is overwritten, only the last buffer length is stored until you tap save.

No. Recordings stay strictly on-device. No cloud uploads, no accounts, no tracking. Nothing is written to your gallery until you explicitly keep it.

Yes. Start, end, save, pause, change clip duration, all from your wrist. Includes a Wear OS Tile and Complication for one-tap save from any watch face.

Yes, on Android, free. Pair any Bluetooth camera shutter remote (the small selfie remotes) with the phone, start the buffer, and press the button: ReplayR saves the replay at the clip length you picked and the phone vibrates to confirm. The phone’s own volume buttons do the same while the camera is recording, and work normally everywhere else. Turn it off with Remote shutter in Settings. Setup and remote buying tips: save a replay with a Bluetooth remote.

Yes, on Pro. Turn on Delayed preview and the camera screen stops showing the present: it plays back what the lens saw 5, 10, 15 or 30 seconds ago, while the rolling buffer keeps recording underneath. Serve, land the trick, finish the rep, then look up and watch it, with no saving, no replaying and no walking back to the phone. Pick the delay from the pill on the camera screen or from Settings, and change it mid-session without stopping anything. Two things to know: saving is unchanged, a clip still captures the live footage rather than the delayed picture on screen, and the mirror is video only, with no sound. It runs on Android in the seamless recording mode; the classic recording mode stores footage in blocks too long to replay a few seconds late. Setting the delay to 0s switches the feature off and takes the pill off the camera screen, and that one option is not Pro-gated. More on the model: delayed mirror apps explained.

No. Pro is a one-time unlock, longer buffers, longer clips, capture up to 8K, hand-gesture save, the delayed preview mirror, frame-by-frame analysis, drawing on a frame, muting a saved clip, and bin restore.

Less than full-session recording. Stealth mode keeps the screen pitch-black while buffering to save battery on long sessions.

No. ReplayR keeps the screen awake while the camera is recording, so the phone never auto-locks and the buffer never stops halfway through a session. It is on for everyone, free tier included, with nothing to set up. For long sessions, turn on stealth mode as well: the screen goes pitch-black to save battery, but the phone still stays unlocked and recording.

Yes, on Pro. The Analyze button on the review screen opens a fullscreen player built for close inspection: step forward or back one frame at a time, hold a step button to run through a sequence, or drag across the video to scrub with frame-level precision, with a live counter showing which frame you are on. Playback slows to 0.1×, and the volume keys step one frame at a time so your fingers stay off the picture. Any single frame can be saved to your photos or shared, at the clip's full recording quality. Side-by-side comparison and voice-over still belong to dedicated analysis apps such as OnForm. Full walkthrough: frame-by-frame video analysis.

Yes, on Pro. Pause on the frame that matters and tap Annotate frame: freehand for a swing path or footwork, a straight line for alignment, and short text labels where they belong. Four colours, three sizes, undo and clear-all. Saving or sharing gives you one image with the markings baked in at the clip's full recording quality, and you come back to the exact same frame in the analyzer. Full walkthrough: drawing on a video frame.

Yes. The rolling buffer records the phone’s camera microphone, so a saved clip keeps the sound that was around when the moment happened, and you can remove that sound afterwards. Open the clip, tap Edit, and switch the Audio row to muted (Pro). The preview goes silent as soon as you tap it and the audio track is stripped from the file when you confirm, so the shared MP4 has no sound at all rather than sound turned down. Deciding after the clip is saved is the point: sideline audio picks up other people’s children by name, parents’ commentary, coaching you would not want quoted, and music over the facility speakers. Muting is permanent for that clip, so keep a copy first if the sound might matter, and if you never want audio at all, say no to the microphone permission: ReplayR records anyway, the clips simply have no sound, and a “No sound” tag in the top bar shows it (tap the tag to turn sound back on). See recording ethics in sports facilities and the full FAQ.

Keep the clip at the end of the session, trim it in the built-in editor, then share videos through whatever you already use, Quick Share, your team chat, email, or a messaging app. There is no upload step and no link that expires, because the file is on your phone rather than on a server. The full walkthrough, including slowing a clip down before sending it, is in how to share slo-mo clips with athletes.