# Dark Matter Jiu Jitsu — Track your training at DMJJ

> Jiu-Jitsu training tracker with streaks, badges, and technique videos. (iPhone/iPad app by Korey Kerber.)

- Source: https://appshunter.io/ios/app/dark-matter-jiu-jitsu/id6761558057 (this page in markdown: same URL + `.md`)
- Developer: [Korey Kerber](https://appshunter.io/developer/1890267046)
- Category: Health & Fitness, Sports
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 12+
- Requires: iOS 15.1 · 22 MB
- Languages: English
- Released: 2026-04-07
- Data updated: 2026-06-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dark-matter-jiu-jitsu/id6761558057/reviews.md

## What is Dark Matter Jiu Jitsu?

Dark Matter Jiu-Jitsu is your personal Jiu-Jitsu 
training companion.

Track your classes, build streaks, earn badges, stay up to date at the academy, and watch 
technique videos.

Features:
Daily training streak tracking - stay motivated!
Class attendance records - see your progress
Badges & achievements - get rewarded
Technique video library - improve your skills
Goal setting - set targets and achieve them
Points & rewards system - unlock achievements

Age-verified and COPPA compliant for users 13+.

Join Dark Matter Jiu-Jitsu and take your training to the next level!

## Key features

- Daily training streak tracking
- Class attendance records
- Badges and achievements
- Technique video library
- Goal setting
- Points and rewards system


## Frequently asked questions about Dark Matter Jiu Jitsu

### What is Dark Matter Jiu Jitsu?

Dark Matter Jiu Jitsu is a mobile application designed to help practitioners track their martial arts training. It allows users to log classes, monitor streaks, earn badges, and access a library of technique videos.

### What are the main features of Dark Matter Jiu Jitsu?

Key features include daily training streak tracking, class attendance records, a system for earning badges and achievements, a technique video library, goal setting capabilities, and a points and rewards system.

### Is Dark Matter Jiu Jitsu free to use?

Yes, Dark Matter Jiu Jitsu is available for free. There are no in-app purchases or advertisements mentioned in the provided data.

### What devices does Dark Matter Jiu Jitsu support?

Dark Matter Jiu Jitsu is supported on iPhone, iPad, and iPod devices.

### What is the age rating for Dark Matter Jiu Jitsu?

Dark Matter Jiu Jitsu has an age rating of 12+ and is COPPA compliant for users aged 13 and older.

### How often is Dark Matter Jiu Jitsu updated?

The latest version, 1.1.0, was released on April 29, 2026, indicating recent development activity. The app was initially released on April 7, 2026.

### Does Dark Matter Jiu Jitsu integrate with other health apps?

The provided description does not mention any integrations with other health or fitness applications. Its focus is on tracking specific Jiu-Jitsu training metrics.

### What do users like about Dark Matter Jiu Jitsu?

Based on the single rating available, the app has received a perfect 5.0 stars. Users likely appreciate its comprehensive tracking features for martial arts training and motivational elements like streaks and badges.

## Version history (last 2 releases)

### 1.1.0 — 2026-04-29

New to 1.1.0

- New Pro Shop tab — browse Dark Matter merch (apparel, rashguards, patches, accessories) 
The "Pro Shop" tab in this update is a display-only catalog for physical 
gym merchandise (apparel, rashguards, patches, accessories). 

Members purchase items in person at our gym (cash, card, or check). 
There is no in-app purchase, no checkout flow, no external payment link, 
and no digital goods. Each product detail page shows photos, sizes, and 
the message "Available at the gym — see an instructor or front desk."

- Tap notifications to view full details, with a delete option for ones you've read
- Smoother keyboard handling across login, signup, profile editing, and more
- Faster updates — bug fixes and improvements now arrive automatically
- Date and time displays now show correctly in Phoenix time

### 1.0 — 2026-04-07

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-26.*