Randori

Track your heart rate while doing jiu jitsu. Tap in, get to rolling — your work lands in Apple Health and your partners cheer it.

Track your heart rate while doing jiu jitsu. Track your effort, take notes, learn what to do in every situation, connect with your training partners, and forecast your belt progress.

GET CREDIT FOR YOUR HARD WORK Tap in and get to rolling. After class, tap out — your workout lands in Apple Fitness and Health with honest calories, shown to you before they're written. You can't wear a watch while rolling, so strap on any Bluetooth heart-rate sensor and every session carries your real measured heart rate, minute by minute, colored by effort from easy to max.

YOUR TRAINING, FINALLY COUNTED A trained-day calendar that shows your consistency at a glance. Effort by Session — every class as a bar, colored by how hard your heart worked against your own measured max. Check in at your gym with a single location fix that's matched to the venue and immediately discarded.

KNOW HOW CLOSE YOU ACTUALLY ARE Every belt and stripe you've earned, with the real dates. Randori reads your training and gives you an honest range for what's next — a window, not a date. Your professor decides.

EVERYONE YOU ROLL WITH, IN ONE PLACE Connect with training partners, coaches, and professors by trading profile cards in person. They'll see your sessions, posts, and promotions, so you can cheer and encourage each other. No strangers, no follower counts, no algorithm.

STOP GETTING CAUGHT BY THE SAME THING Write what happened tonight and Randori hands you the answer, on film, from instructors worth learning from — a curated curriculum across all five belts, played through YouTube's own player, never copied. The suggestion engine runs entirely on your iPhone; your words never leave the device.

YOUR TRAINING STAYS YOURS No account, no ads, no tracking, no streak theater, and no server of ours holding your life. Your workouts live in Apple Health on your device; your rank, posts, and profile ride your own iCloud, shared user-to-user only with partners you invited.

Built for jiu-jitsu. Works for judo, wrestling, and any grappling art where a wearable doesn't survive the round.