Kurobi: BJJ Journal & Tracker

Log a roll in 30 seconds. Watch the exact move in 3D. See which positions keep beating you and exactly what to drill next.

Stop training blind.

Kurobi turns every class, open mat and competition into a connected map of your jiu-jitsu. Log what happened, see how positions and moves connect, and pick what deserves work next.

LOG WHILE IT’S FRESH

Log what you drilled, rolled and competed before the details fade. Mark the positions and moves, which side you were on, and where you got stuck, what didn’t land and what you had no answer to.

BUILD YOUR GAME MAP

Every log adds evidence to a picture of your actual game. Trace the chains you keep coming back to, open the session behind any problem, and watch the map fill in as you train.

SEE THE MOVES IN 3D

Browse a curated map of 700+ positions and 1,400+ animated moves. Schematic 3D previews play a whole chain end to end, so you can see the shape of something you only half-remember from class.

FIND WHAT TO PRACTICE NEXT

Kurobi reads the outcomes you logged and surfaces what needs work: the moves that didn’t land, the positions you got stuck in, what you had no answer to, and the moves gone cold. Your practice queue comes from your own mat time, not a generic curriculum.

BUILT FOR THE GYM

Logging and the map work offline, and your data syncs when you reconnect. Big targets and few taps, so a log fits between rounds.

KUROBI PRO

Eligible new subscribers can start a 14-day free trial. After the trial it continues at the selected plan’s price unless cancelled. Prices, trial eligibility and promotional terms are shown before you confirm. Manage or cancel in your Apple Account settings. To avoid renewal after a free trial, cancel at least 24 hours before it ends.

Kurobi’s map is a curated model of grappling, not a complete one: real positions, names and variations differ between instructors, academies and rulesets. It supports your review and does not replace qualified in-person instruction, supervision or your own judgment.

Turn your next session into a practice plan.

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