An AI BJJ coach that actually knows your game
Generic AI gives generic jiu-jitsu advice. Linear BJJ's coach is different for one structural reason: it has been paying attention. Every journal entry feeds an athlete memory of your positions, your problems, and your progress — and the coaching runs on top of it.
Grounded in your training, not the internet average
Ask "what should I focus on?" and a general chatbot has to guess — it doesn't know you've been stuck under side control for three weeks or that your knee cut started clicking last month. Linear BJJ does, because your journal built that memory session by session. Answers reference your actual game: the guard you play, the passers who give you trouble, the submission you're developing.
Deep jiu-jitsu knowledge, by design
The coaching stack is built only for grappling, with jiu-jitsu-specific knowledge underneath it — so technique answers carry the level of detail that separates a useful answer from a Wikipedia summary: grips, weight distribution, common counters, and what to do when the first option dies. It also produces BJJ-native artifacts: skill scorecards that rate your game by position, and flowcharts that map your decision tree from a position you're working on.
Chat when you're thinking, voice when you're moving
Type when you're studying — reviewing an instructional, planning a competition game. Talk when you're on the move — the real-time voice mode handles post-class recaps and quick questions hands-free, and everything it learns lands in the same memory.
FAQ
How is this different from asking ChatGPT about BJJ?
Two ways. Depth: Linear BJJ's coaching runs on jiu-jitsu-specific knowledge, so answers go past generic advice into the details that actually matter at your level. Context: it's grounded in your athlete memory — your positions, your recurring problems, your last few months of entries — so 'what should I work on?' gets an answer about you, not a listicle.
Can I talk to it out loud?
Yes — real-time voice conversation is built in, designed for post-training recaps and quick technique questions when your hands are busy or you're driving home from class.
Is it a replacement for my coach?
No, and it's not trying to be. Your coach sees your body mechanics; Linear BJJ sees your history. It's the between-classes layer: it helps you retain what your coach taught, spot patterns, and show up with better questions.
What kinds of questions does it handle well?
Technique details ('what's the grip on that collar drag?'), positional problem-solving ('I keep getting flattened in half guard'), game planning for upcoming rounds or competition, and picking a focus for your next session based on your recent entries.
Get a coach that remembers every session
Free for 14 days, then a simple subscription — cancel anytime. Works on iOS, Android, and the web; you'll grab the app right after you start.