# O vs 新AI脳トレ

The clearest difference is in-app purchases: 新AI脳トレ at none against O's 2. 新AI脳トレ also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. O sells 2 in-app purchases, starting at $2.99 per month. 新AI脳トレ asks for nothing beyond the download.

O ships an update every 2 weeks, 新AI脳トレ every 3 weeks. The most recent releases landed on October 14, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | O | 新AI脳トレ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 49 MB | 30 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Morson Japan](https://appshunter.io/developer/496417616) | [Yusuke Sano](https://appshunter.io/developer/1846508462) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-trainer/id6443540195)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン（１ヶ月） | $2.99 | per month |
| 広告を削除 | $2.99 | one-time |


### 新AI脳トレ

[App page](https://appshunter.io/ios/app/ai/id6759478870)

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

**In-app purchases:** none


## Frequently asked questions

### Is O free?

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

### Is 新AI脳トレ free?

新AI脳トレ is free to download, with no in-app purchases.

### Do O or 新AI脳トレ have ads?

Neither O nor 新AI脳トレ shows ads.

### Which is updated more often, O or 新AI脳トレ?

O ships an update every 2 weeks, and 新AI脳トレ every 3 weeks. Most recently, O was updated on October 14, 2026 and 新AI脳トレ 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.*