# OpponentBook > The private journal you keep on every opponent — and on yourself. Canonical page: [https://chrome-stats.com/d/com.opponentbook.app](https://chrome-stats.com/d/com.opponentbook.app) ## Overview - **ID:** `com.opponentbook.app` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Recsty - **Category:** HEALTH\_AND\_FITNESS - **Downloads:** 25 - **Version:** 1.7.1 - **Last updated:** 2026-10-30 - **First published:** 2026-09-04 - **Publisher country:** SE - **Size:** 36 MB - **Data as of:** 2026-11-01 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.opponentbook.app) - **Website:** [https://www.opponentbook.com/](https://www.opponentbook.com/) - **Privacy policy:** [https://app.opponentbook.com/privacy](https://app.opponentbook.com/privacy) ## Description Every opponent you've ever faced, remembered. What worked, what didn't, and what to do next time — in a private journal that's yours alone.

OpponentBook is a journal for individual-sport athletes. Log matches, keep notes on the people you face, and build a living scouting book over your career — with photos, video clips and tactical pins placed directly on the piste, table, court, ring or mat — and, once you upload the match video, each pin links to the exact second in it: one tap takes you from the note to the footage.

SEVENTEEN SPORTS
Fencing, table tennis, tennis, badminton, squash, padel, judo, karate, kendo, kyokushin, taekwondo, boxing, kickboxing/Muay Thai, wrestling, BJJ, jujutsu and MMA — each with its own playing surface and vocabulary.

YOUR JOURNAL STAYS ON YOUR OWN STORAGE
Your journal lives on your device and on storage you control — Google Drive or Dropbox — and OpponentBook keeps no server copy of it. When you start an AI feature, the content it needs passes through our servers to the AI provider, and we do not keep it. Optional end-to-end encryption hides your entries from your storage provider too.

FREE, FOR REAL
• Unlimited opponents, matches and training entries
• Tactical pins on the actual playing surface
• Every pin links to the exact second in your match video — tap it and watch the moment
• Review any pinned moment in slow motion, or frame by frame
• Unlimited photos and video clips (they live on your storage)
• Add photos and video while you log the match, not only afterwards
• A profile photo for every opponent, and their match videos on their profile
• Cross-device sync through your own storage — big clips resume where they left off
• PDF and Word export — hand your coach a brief they can read on the spot
• Works offline; syncs when you're back
• Available in 21 languages

GO DEEPER WITH PREMIUM, PRO AND MAX
Premium — your statistics and tools
• Which actions work and which fail — and where on the playing surface
• Heatmaps of every pin, across all your opponents
• Every video moment you pinned to an action, across all opponents, in one reel
• How each action fares against each playing style
• Win rate by opponent trait, by style tag, and by month, quarter or year
• Your training minutes beside your win rate, period by period
• AI summaries of any opponent, AI tag suggestions on your notes
• Voice dictation into any note
• A training plan that shows where your logged training drifts from it
• Physical tests with personal and season bests, and Excel exports for your coach
• Branding-free PDF and Word exports

Pro — the deep AI analyses
• Pre-competition briefs on the people you are about to face
• In-depth match reviews
• Playing-style classification and matchup-pattern analysis
• How an opponent's game has changed since you first logged them
• Recurring tendencies lifted from your notes into their profile
• The themes your training keeps coming back to

All of it grounded in your own notes, in your own language. Max is Pro with more headroom.

Download OpponentBook and start the journal you keep on every opponent — and on yourself. ## Rankings - #2,507,560 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.FOREGROUND_SERVICE_DATA_SYNC` - `android.permission.INTERNET` - `android.permission.MODIFY_AUDIO_SETTINGS` - `android.permission.RECORD_AUDIO` - `android.permission.USE_BIOMETRIC` - `android.permission.USE_FINGERPRINT` - `android.permission.WAKE_LOCK` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.opponentbook.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [TT Playbook Player](https://chrome-stats.com/d/com.tt_playbook.app) — 297 users - [Personal Tennis Journal](https://chrome-stats.com/d/com.aistudio.tennisjournal.lybesy) — 18 users - [Tennis Notebook: Match Journal](https://chrome-stats.com/d/com.pixelbrewstudio.tennisnotebook) — 603 users - [RacketScores: Tennis Tracker](https://chrome-stats.com/d/app.racketscores.mobile) — 5 users - [Badminton Log](https://chrome-stats.com/d/com.pando.badmintonmatchlog) — 12 users - [Outlooped: Table Tennis Coach](https://chrome-stats.com/d/com.outlooped.app) — 105 users - [my tennis journal](https://chrome-stats.com/d/cpesa2021.mytennisjournal) — 580 users - [Football Match Journal](https://chrome-stats.com/d/com.hugo.player.stop.game.sqwore) — 6 users - [SpinBook - Table Tennis Diary](https://chrome-stats.com/d/com.spintrack.rubberapp) — 700 users - [On Court Pro](https://chrome-stats.com/d/app.oncourtpro) — 18 users - [Court Chronicle](https://chrome-stats.com/d/com.courtchronicle.g587e57aa894387182d0b) — 136 users - [RivalTrack](https://chrome-stats.com/d/com.rivaltrack.sports) — 1 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.opponentbook.app)