OpponentBook

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 NOTES NEVER TOUCH OUR SERVERS

Your journal lives on storage you control — Google Drive or Dropbox — never in our database. We cannot read your notes: that's how the app is built, not just a promise. 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, month by month

• 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

• 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.