ReplayR is an instant replay camera app for Android and Wear OS that keeps a rolling video buffer running on your phone, so you can save the last 15 seconds to 12 minutes of action after the moment has already happened.
It solves a problem every phone camera has: cameras record forward, but sport happens backwards. You only know a rally was worth filming once it is over. So people record everything: a 40-minute padel session, a full training block, an entire match , then scrub through it for one good point, delete the rest, and finish with a dead battery and a clogged camera roll.
ReplayR inverts that. The buffer runs continuously, nothing is written to your gallery, and you press save afterwards.
HOW IT WORKS
1. Mount the phone on a tripod, a fence or a wall, wherever it sees the action.
2. Tap start. ReplayR loops over the last 15 seconds, 90 seconds, or up to 12 minutes.
3. Save the moment three ways: tap the screen, press your smartwatch, or hold up an open palm for hands-free capture.
4. Swipe through the takes at the end of the session: right to keep, left to toss , then trim the keepers in the built-in editor.
WHAT MAKES REPLAYR DIFFERENT
A real Wear OS app, not a notification. Save, pause, start and end a session and change clip duration from your wrist, with a Wear OS Tile and a Complication for one-tap save straight from the watch face. When the phone is 20 metres away on a fence, that is the difference between catching a moment and jogging over to it.
Hand-gesture save. Hold up an open palm and ReplayR captures the replay without you touching the phone.
The longest rolling buffer on Android: 12 minutes, where comparable pre-record camera and delay camera apps stop between 30 seconds and 5 minutes. Long enough for a full drill, a tennis set or a climbing route.
A triage step. Other replay apps dump every clip straight to your gallery. ReplayR stages them, you swipe keep or toss at the end of the session, and only the keepers reach your photos. A bin holds tossed clips for 24 hours.
Stealth mode. A pitch-black screen while the buffer runs, so the phone is not glowing on the sideline and the battery lasts through a session.
PRIVATE BY DESIGN
Video stays on the device. No cloud uploads, no accounts, no sign-up, no ads. Nothing is written to your gallery until you explicitly keep it. The app works fully offline.
Video stays on the device. No cloud uploads, no accounts, no sign-up, no tracking, no ads. Nothing is written to your gallery until you explicitly keep it, and the app works fully offline — which matters on a court with no signal, or when other people's kids are in frame.
WHO IT IS FOR
Tennis, padel and pickleball players reviewing rallies. Surfers, skiers and skaters catching takeoffs and tricks. Coaches running sideline video review and giving technique feedback on the spot instead of in an app that evening. Solo athletes doing form checks on lifts, swings and serves with nobody to hold the camera. Parents catching first steps and backyard goals — the things that happen exactly once.
PRICING
Free: 45 or 90-second rolling buffer, clips from 5 to 30 seconds, 480p capture, the full Wear OS app, swipe-to-keep review, trim editor, stealth mode and the 24-hour bin.
Pro: a one-time $5.49 unlock — 3, 6 or 12-minute buffer, clips up to 10 minutes, capture from 720p to 8K up to your device's maximum, hand-gesture save and bin restore.
No subscription. The category runs on monthly plans and $99 one-off licences; ReplayR is one small payment that never renews.
COMMON QUESTIONS
What is a rolling buffer camera? A camera mode that records continuously into temporary memory and keeps only the segment you ask for. You press save after the action, and the app writes the preceding seconds or minutes to a file.
Does ReplayR record everything to my phone? No. Footage stays in a temporary buffer and is discarded unless you save it, so storage stays flat over a long session.
Can I save a replay from my watch? Yes. The Wear OS companion saves clips, pauses and resumes the buffer, starts and ends sessions and changes clip length, including from a Tile or a watch-face Complication.
Does it need internet or an account? Neither. ReplayR runs entirely offline with no sign-up and no cloud.
Is it free? Yes, with a 45 or 90-second buffer at 480p. Pro is a one-time $5.49 unlock, not a subscription.
Which sports does it work for? Any sport you can point a phone at — racquet sports, team sports, board sports, gym and technique work.
STATUS
Live on Google Play for Android and Wear OS. iOS is in progress. Built solo and bootstrapped, with no funding and no investors. you explicitly keep it, and the app works fully offline — which matters on a court with no signal, or when other people's kids are in frame.
WHO IT IS FOR
Tennis, padel and pickleball players reviewing rallies. Surfers, skiers and skaters catching takeoffs and tricks. Coaches running sideline video review and