# Ground CTRL vs Kurobi

The clearest difference is monetization model: Ground CTRL at freemium against Kurobi's subscription. Kurobi's advantage is update cadence (every 2 days vs weekly). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Ground CTRL sells 4 in-app purchases, starting at $9.99 per month and Kurobi sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Ground CTRL ships an update weekly, Kurobi every 2 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Ground CTRL | Kurobi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (7 ratings)](https://appshunter.io/ios/app/ground-ctrl-bjj/id6763345915/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | **Freemium** | Subscription |
| Size | 52 MB | 72 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Michael DerGarabedian](https://appshunter.io/developer/1895274656) | [Mark Isayan](https://appshunter.io/developer/1880254385) |

## What reviewers say

### Ground CTRL

[App page](https://appshunter.io/ios/app/ground-ctrl-bjj/id6763345915)

Upload your Brazilian Jiu-Jitsu rolls for AI-powered analysis. Get detailed feedback, personalized drills, and track your progress towards your next belt. Improve your skills between classes with precision coaching tailored to your performance.

**Highlights:** AI Roll Analysis, 7-section coaching breakdown, Personalized drills, Belt-level curriculum, Progress tracking, Strength & conditioning programming

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CTRL Pro Monthly | $9.99 | per month |
| CTRL Pro Annual - Special | $49.99 | per year |
| CTRL Pro Annual | $69.99 | per year |
| 5 Extra Analyses | $2.99 | one-time |


### Kurobi

[App page](https://appshunter.io/ios/app/kurobi-bjj-techniques-in-3d/id6773536053)

Learn over 580 Brazilian Jiu-Jitsu techniques with interactive 3D models. Study moves step-by-step, explore follow-ups, and track your training progress. Access a comprehensive library of gi and no-gi grappling techniques.

**Highlights:** 580+ 3D BJJ techniques, Step-by-step move breakdown, View techniques from any angle, Linked follow-ups and counters, Browse by goal or search by name, Offline library and training logs, Track drills, rolls, and competitions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kurobi Pro Monthly | $9.99 | per month |
| Kurobi Pro Yearly | $97.99 | per year |


## Frequently asked questions

### Is Ground CTRL free?

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

### Is Kurobi free?

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

### Do Ground CTRL or Kurobi have ads?

Neither Ground CTRL nor Kurobi shows ads.

### Which is updated more often, Ground CTRL or Kurobi?

Ground CTRL ships an update weekly, and Kurobi every 2 days. Most recently, Ground CTRL was updated on October 31, 2026 and Kurobi 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.*