# Source Performance vs Dark Matter Jiu Jitsu

The clearest difference is ratings volume: Source Performance at 9 against Dark Matter Jiu Jitsu's 1. Dark Matter Jiu Jitsu's advantage is update cadence (every 3 weeks vs every 2 months). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Source Performance against 5.0 for Dark Matter Jiu Jitsu. That said, the two scores are not equally well evidenced: Source Performance has 9 ratings behind it against 1, so its average is the more settled of the two.

Source Performance ships an update every 2 months, Dark Matter Jiu Jitsu every 3 weeks. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Source Performance | Dark Matter Jiu Jitsu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (9 ratings)](https://appshunter.io/ios/app/source-performance/id6590602459/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/dark-matter-jiu-jitsu/id6761558057/reviews) |
| Number of ratings | **9** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 180 MB | 22 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Source Performance LLC](https://appshunter.io/developer/1760047672) | [Korey Kerber](https://appshunter.io/developer/1890267046) |

## What reviewers say

### Source Performance

[App page](https://appshunter.io/ios/app/source-performance/id6590602459)

This app provides personalized workout programs and tracks your fitness journey. Monitor workouts, nutrition, habits, and measurements with coach support. Achieve your health goals with guided exercises and progress tracking.

**Highlights:** Access and track training plans, Follow exercise and workout videos, Track meals and food choices, Monitor daily habits, Set and track health goals, Message your coach in real-time, Track body measurements and progress photos

**Features:** Apple Wallet

**In-app purchases:** none


### Dark Matter Jiu Jitsu

[App page](https://appshunter.io/ios/app/dark-matter-jiu-jitsu/id6761558057)

This app helps you track your martial arts training progress. Log classes, build streaks, earn rewards, and access technique videos to improve your skills. It's designed for dedicated practitioners to stay motivated and organized.

**Highlights:** Daily training streak tracking, Class attendance records, Badges and achievements, Technique video library, Goal setting, Points and rewards system

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Source Performance free?

Source Performance is free to download, with no in-app purchases.

### Is Dark Matter Jiu Jitsu free?

Dark Matter Jiu Jitsu is free to download, with no in-app purchases.

### Which has better reviews, Source Performance or Dark Matter Jiu Jitsu?

Source Performance and Dark Matter Jiu Jitsu are both rated 5.0 out of 5 on the App Store, from 9 and 1 ratings respectively.

### Do Source Performance or Dark Matter Jiu Jitsu have ads?

Neither Source Performance nor Dark Matter Jiu Jitsu shows ads.

### Which is updated more often, Source Performance or Dark Matter Jiu Jitsu?

Source Performance ships an update every 2 months, and Dark Matter Jiu Jitsu every 3 weeks. Most recently, Source Performance was updated on October 5, 2026 and Dark Matter Jiu Jitsu on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*