# Underhook vs Ground CTRL

The clearest difference is rating: Underhook at 5.0 against Ground CTRL's 3.9. Underhook also leads on update cadence (every 3 days vs weekly). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Underhook sells 3 in-app purchases, starting at $7.99 per month and Ground CTRL sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Underhook holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 9 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Underhook ships an update every 3 days, Ground CTRL weekly. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Underhook | Ground CTRL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/underhook-bjj-and-jiu-jitsu/id6760555653/reviews)** | [3.9 (7 ratings)](https://appshunter.io/ios/app/ground-ctrl-bjj/id6763345915/reviews) |
| Number of ratings | **9** | 7 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Freemium | Freemium |
| Size | 175 MB | 52 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oleksii Vasyliev](https://appshunter.io/developer/1884446171) | [Michael DerGarabedian](https://appshunter.io/developer/1895274656) |

## What reviewers say

### Underhook

[App page](https://appshunter.io/ios/app/underhook-bjj-and-jiu-jitsu/id6760555653)

This app offers daily decision-training exercises for Brazilian Jiu-Jitsu practitioners. It provides a structured learning path with various formats to reinforce mat training and improve understanding of grappling positions and strategies.

**Highlights:** Structured learning path from white to blue belt, 1,000+ scenario questions, Multiple learning formats (lessons, quizzes, chats), Daily 5-minute habit building, AI rival for realistic practice, Progress tracking with streaks and XP

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Underhook Pro Monthly | $7.99 | per month |
| Underhook Pro Annual | $49.99 | per year |
| Underhook Pro Lifetime | $99.99 | one-time |


### 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 |


## Frequently asked questions

### Is Underhook free?

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

### Is Ground CTRL free?

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

### Which has better reviews, Underhook or Ground CTRL?

Underhook is rated higher. Underhook averages 5.0 out of 5 from 9 ratings, while Ground CTRL averages 3.9 from 7 ratings.

### Do Underhook or Ground CTRL have ads?

Neither Underhook nor Ground CTRL shows ads.

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

Underhook ships an update every 3 days, and Ground CTRL weekly. Most recently, Underhook was updated on November 9, 2026 and Ground CTRL on October 31, 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.*