# iRoll BJJ vs SYSTEM JJ

The clearest difference is in-app purchases: SYSTEM JJ at none against iRoll BJJ's 2. SYSTEM JJ also leads on update cadence (every 3 days vs every 3 weeks) and iOS requirement (15.1 vs 18.1). On price, ads and device support there is nothing between them.

Both are free to download. iRoll BJJ sells 2 in-app purchases, starting at $5.99 per month. SYSTEM JJ asks for nothing beyond the download.

iRoll BJJ ships an update every 3 weeks, SYSTEM JJ every 3 days. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | iRoll BJJ | SYSTEM JJ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/system-jj/id6760544977/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | — | Free |
| Size | 13 MB | 194 MB |
| Requires iOS | 18.1 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [iRoll Ltd](https://appshunter.io/developer/1872807713) | [Nicholas Hession-Kugelman](https://appshunter.io/developer/1884887934) |

## What reviewers say

### iRoll BJJ

[App page](https://appshunter.io/ios/app/iroll-bjj/id6758413105)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iRoll BJJ Monthly | $5.99 | per month |
| iRoll BJJ Annual | $49.99 | per year |


### SYSTEM JJ

[App page](https://appshunter.io/ios/app/system-jj/id6760544977)

This training companion helps you master jiu-jitsu by capturing session intentions and feedback. Record audio and video notes, utilize templates, and get AI coaching within the app.

**Highlights:** Capture training session intentions, Record audio notes, Record video notes, Utilize templates, AI coach integration

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

**In-app purchases:** none


## Frequently asked questions

### Is iRoll BJJ free?

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

### Is SYSTEM JJ free?

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

### Do iRoll BJJ or SYSTEM JJ have ads?

Neither iRoll BJJ nor SYSTEM JJ shows ads.

### Which is updated more often, iRoll BJJ or SYSTEM JJ?

iRoll BJJ ships an update every 3 weeks, and SYSTEM JJ every 3 days. Most recently, iRoll BJJ was updated on October 25, 2026 and SYSTEM JJ on November 5, 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.*