# Kurobi vs RookFlow

The clearest difference is in-app purchases: RookFlow at none against Kurobi's 2. Kurobi's advantage is iOS requirement (16.4 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Kurobi sells 2 in-app purchases, starting at $9.99 per month. RookFlow asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on November 5, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Kurobi | RookFlow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Subscription | — |
| Size | 72 MB | 123 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Mark Isayan](https://appshunter.io/developer/1880254385) | [Pratheek Balakrishna](https://appshunter.io/developer/1826744138) |

## What reviewers say

### 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 |


### RookFlow

[App page](https://appshunter.io/ios/app/rookflow-grappling-map/id6804788233)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kurobi free?

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

### Is RookFlow free?

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

### Do Kurobi or RookFlow have ads?

Neither Kurobi nor RookFlow shows ads.

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

Kurobi ships an update every 2 days, and RookFlow every 2 days. Most recently, Kurobi was updated on November 5, 2026 and RookFlow on November 4, 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.*