# Brain vs Kiro

Brain and Kiro 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. Neither carries in-app purchases, so what you see is what you pay.

Brain ships an update every 6 weeks, Kiro every 2 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Brain | Kiro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Size | 41 MB | 70 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kazuhiro Miyachi](https://appshunter.io/developer/1730505082) | [Kiro Sports](https://appshunter.io/developer/1818083080) |

## What reviewers say

### Brain

[App page](https://appshunter.io/ios/app/brain-jiu-jitsu/id6477785304)

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

**In-app purchases:** none


### Kiro

[App page](https://appshunter.io/ios/app/kiro/id6746716313)

**In-app purchases:** none


## Frequently asked questions

### Is Brain free?

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

### Is Kiro free?

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

### Do Brain or Kiro have ads?

Neither Brain nor Kiro shows ads.

### Which is updated more often, Brain or Kiro?

Brain ships an update every 6 weeks, and Kiro every 2 months. Most recently, Brain was updated on October 15, 2026 and Kiro on October 10, 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.*