# Jujitsu vs MUSCL

The clearest difference is in-app purchases: Jujitsu at none against MUSCL's 2. Jujitsu also leads on iOS requirement (13.6 vs 15.1). MUSCL's advantage is update cadence (every 4 days vs every 29 months). On price, ads and device support there is nothing between them.

Both are free to download. MUSCL sells 2 in-app purchases, starting at $19.99 per month. Jujitsu asks for nothing beyond the download.

Jujitsu ships an update every 29 months, MUSCL every 4 days. Both last shipped on October 10, 2026.

## The numbers

| Metric | Jujitsu | MUSCL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/jujitsu/id1099649272/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 2 MB | 49 MB |
| Requires iOS | **13.6** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Adam Sorini](https://appshunter.io/developer/1099649271) | [IKARUS PTY LTD](https://appshunter.io/developer/1879736035) |

## What reviewers say

### Jujitsu

[App page](https://appshunter.io/ios/app/jujitsu/id1099649272)

This app helps users learn and practice the Zen Budokai Jujitsu system. It displays technique charts, lists individual techniques, and offers text-to-speech functionality for learning. Users can also have techniques read at random.

**Highlights:** Jujitsu system chart display, Technique listing, Text-to-speech for techniques, Random technique reading, Zen Budokai Aiki Jujitsu focus

**Features:** macOS Compatibility

**In-app purchases:** none


### MUSCL

[App page](https://appshunter.io/ios/app/muscl-physique-intelligence/id6759597207)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MUSCL Monthly | $19.99 | per month |
| MUSCL Annual | $99.99 | per year |


## Frequently asked questions

### Is Jujitsu free?

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

### Is MUSCL free?

MUSCL is free to download, with in-app purchases available.

### Do Jujitsu or MUSCL have ads?

Neither Jujitsu nor MUSCL shows ads.

### Which is updated more often, Jujitsu or MUSCL?

Jujitsu ships an update every 29 months, and MUSCL every 4 days. Most recently, Jujitsu was updated on October 10, 2026 and MUSCL on October 10, 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.*