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App Store Apps > Sports > BJJCraft: Make Your BJJ System
BJJCraft: Make Your BJJ System icon

BJJCraft: Make Your BJJ System

by Kazuki Umemura · Sports · Free
On the App Store since January 2026 · Data updated 2026-10-28

BJJCraft: Make Your BJJ System is made and published by Kazuki Umemura. AppBrain is an independent app data site and isn't affiliated with Kazuki Umemura. The app name, icon, screenshots and description belong to Kazuki Umemura and are shown as published on the App Store.

AppBrain's verdict

Rating on App Store
4.67
6 ratings
Last updated
October 20, 2026
Size
59.3 MB

It doesn't have enough ratings yet to judge what users think. Its best ranking is #99 in Top Grossing, Sports in Japan.

Official page on the App Store

User feedback

Ratings and reviews on the App Store

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Store listing

By Kazuki Umemura, from the App Store
BJJCraft: Make Your BJJ System Screenshot 1 of 5
BJJCraft: Make Your BJJ System Screenshot 2 of 5
BJJCraft: Make Your BJJ System Screenshot 3 of 5
BJJCraft: Make Your BJJ System Screenshot 4 of 5
BJJCraft: Make Your BJJ System Screenshot 5 of 5
Screenshots by Kazuki Umemura, from the the App Store listing
Description by Kazuki Umemura Written by the developer, not by AppBrain. Click to read.
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/
Official page on the App Store Also on Google Play

Safety and technology

Found in the app by AppBrain
Price
Free
App size
59.3 MB
Content rating
Everyone

Technologies used by BJJCraft: Make Your BJJ System

Releases

Updates seen on the App Store
Version
1.2.1
Launched
January 2026

No changelog data

Alternatives

Similar apps and more from Kazuki Umemura

Also available on Google Play

BJJCraft: Make Your BJJ System icon BJJCraft: Make Your BJJ System
BJJCraft
0.0
Free
1,000+

Rankings

App Store top charts
Highest rank
#99
Chart
Top Grossing
Sports
Country
Japan

App Store Rankings for BJJCraft: Make Your BJJ System

Top rankings

Rank Country Category List
99 Japan Sports Top Grossing

Ranking history in Japan

About the app and developer

About BJJCraft: Make Your BJJ System

BJJCraft: Make Your BJJ System is a sports app developed by Kazuki Umemura.

What is the rating of BJJCraft: Make Your BJJ System?

BJJCraft: Make Your BJJ System is rated 4.67 out of 5 stars, based on 6 ratings.

Is BJJCraft: Make Your BJJ System free?

BJJCraft: Make Your BJJ System is free. The app size is 59.29 MB. The latest version available is 1.2.1. The last update was on October 20, 2026.

What are the requirements for BJJCraft: Make Your BJJ System?

The app has a content rating of Everyone. The app has been available on the App Store since January 2026.

Developer information for Kazuki Umemura

Kazuki Umemura

Address:

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