# GrapplingU vs Kurobi

GrapplingU and Kurobi are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. GrapplingU sells 2 in-app purchases, starting at $19.99 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.

GrapplingU ships an update every 4 days, Kurobi every 2 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | GrapplingU | Kurobi |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | — | Subscription |
| Size | 40 MB | 72 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [MARK DENYS YOUNGSON](https://appshunter.io/developer/1874483399) | [Mark Isayan](https://appshunter.io/developer/1880254385) |

## What reviewers say

### GrapplingU

[App page](https://appshunter.io/ios/app/grapplingu/id6758687499)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Pro Monthly | $19.99 | per month |
| Student Pro Annual | $179.99 | per year |


### 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 GrapplingU free?

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

### Is Kurobi free?

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

### Do GrapplingU or Kurobi have ads?

Neither GrapplingU nor Kurobi shows ads.

### Which is updated more often, GrapplingU or Kurobi?

GrapplingU ships an update every 4 days, and Kurobi every 2 days. Most recently, GrapplingU 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.*