Build your own BJJ OS：Organize your techniques, videos, and flowcharts into your own game—with AI helping you structure, search, and refine what actually works for you.
Build your own BJJ OS — your personal game blueprint.
BJJCraft is an app that helps you turn your BJJ knowledge into a searchable, structured system you can apply and continuously improve.
It was built from real competition and teaching experience by the head instructor of Tokyo Jiujitsu Club, a 2nd-degree BJJ black belt and multiple-time IBJJF champion.
Even when people train the same way, some get stronger and others don't.
The difference isn't talent.
It's how well they organize and operate their own BJJ OS — their personal game system.
Training notes, technique videos, flowcharts.
BJJCraft brings scattered BJJ knowledge together and turns it into a system you can search, use, and continuously build upon — your own BJJ OS (game blueprint).
AI in BJJCraft doesn't give you generic answers.
It works quietly in the background to organize, search, and structure your data, helping you turn what actually works for you into long-term BJJ knowledge assets.
Key Features
■ My Knowledge
Daily training takeaways, videos scattered across social media or your phone, your personal technique flowcharts, and what you're currently focusing on in training.
BJJCraft's organizing groups and AI support connect recording → organization → intention into training that actually makes you stronger.
■ Video & Notes Library
Save techniques you've learned or studied with videos and notes.
Organize them by position or custom groups, so you can instantly find the right technique for the right situation.
■ Flowcharts
Visually organize technique sequences and decision branches.
From positions to next transitions, and responses to your opponent's reactions, build your personal game blueprint step by step.
■ AI Search Assistant
Search your own records using natural language.
Find things like "positions where I get stuck in half guard" or "techniques I've been using a lot recently," directly from your own data.
■ AI Organization Support
Automatically organizes videos, notes, and flowcharts based on your groups.
Keeps your knowledge from becoming cluttered and ensures it stays reusable and practical over time.
Recommended For
- Your training notes and videos are scattered across your phone and bookmarks
- You want to systematize your own techniques
- Generic AI answers don't feel relevant to your game
- You want to build a BJJ style that fits your body and personality
- You want to turn your training history into a lasting asset
Subscription
Basic features are available for free.
【BJJCraft Standard Plan (Monthly)】
Price: $4.99/month
Duration: 1 month (auto-renewable monthly subscription)
Free Trial: 14 days
Includes: Expanded AI search and organization features, larger storage capacity, unlimited training notes
Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Any unused portion of a free trial period will be forfeited when you purchase a subscription.
From white belt to black belt.
BJJCraft is a place where every Jiu-Jitsu practitioner can build and evolve their own BJJ OS.
Terms of Service: https://bjj-craft.tekural.com/terms
Privacy Policy: https://bjj-craft.tekural.com/privacy
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
I have found zero bugs in this app. You can keep memos, set daily and monthly goals. Track your rolls. Add Videos added with TIME Stamps. Flow chart features to make your own charts. Video groups so you can focus on a topic and more… I absolutely love this app. I am wishing this team the best!
Developer Response
Thank you so much for the amazing review!We’re thrilled to hear you’re enjoying the app. Your support and kind words truly mean a lot to us! Thanks for being part of the journey!
Get it and Use it
thesquirejons
Excellent app. This app tracks all your training and organizes all of your techniques into game plans. If you’re not naturally organized this app will make you much more efficient. The English version is great. Highly recommended.
BJJCraft
Old Grappler
This is a great tool for organizing your JJ progression and tracking the thousands of videos that I view, and then forget about! I am enjoying it.
Very impressed!
Ryan Mulvihill
This is a great tool for anyone who loves and trains BJJ. I’ll be recommending this to all my students as I put an emphasis on studying outside of the gym and off the mat. Ossssss
・Added group sharing. You can now send a My Knowledge group to a training partner with a share link, and recipients can preview the contents before adding it
・Flowcharts now support copying multiple steps at once, with a drag-to-resize selection box for picking exactly the range you want
・Groups (tags) can now be sorted in the note and technique editors as well as in your lists, and your chosen order is saved across devices
・You can now tap anywhere on the video progress bar to jump to that moment, and unlisted Vimeo videos are now supported
・Made the first-time walkthrough easier to follow, with a progress gauge and the option to skip optional steps
・Fixed issues with video playback, the subscription screen, and opening the app from a share link, and improved overall stability
Version 1.1.6
The developer, Kazuki Umemura, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Purchases
Contact Info
User Content
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
TJDC LLC
Size
61.5 MB
Category
Sports
Compatibility
Requires iOS 15.1 or later.
iPhone Requires iOS 15.1 or later.
iPad Requires iPadOS 15.1 or later.
iPod touch Requires iOS 15.1 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
