# 3D記憶力テスト～脳トレ・認知症予防アプリ vs ストループ１分チャレンジ

The clearest difference is update cadence: ストループ１分チャレンジ at every 4 days against 3D記憶力テスト～脳トレ・認知症予防アプリ's every 29 months. 3D記憶力テスト～脳トレ・認知症予防アプリ's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

3D記憶力テスト～脳トレ・認知症予防アプリ ships an update every 29 months, ストループ１分チャレンジ every 4 days. The most recent releases landed on October 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 3D記憶力テスト～脳トレ・認知症予防アプリ | ストループ１分チャレンジ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 29 months | **Every 4 days** |
| Size | 199 MB | 80 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takuma Takahashi](https://appshunter.io/developer/1514411811) | [taro nakamura](https://appshunter.io/developer/1584307392) |

## What reviewers say

### 3D記憶力テスト～脳トレ・認知症予防アプリ

[App page](https://appshunter.io/ios/app/3d/id1528475226)

**Features:** macOS Compatibility

**In-app purchases:** none


### ストループ１分チャレンジ

[App page](https://appshunter.io/ios/app/id6787798426)

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

**In-app purchases:** none


## Frequently asked questions

### Is 3D記憶力テスト～脳トレ・認知症予防アプリ free?

3D記憶力テスト～脳トレ・認知症予防アプリ is free to download, with no in-app purchases.

### Is ストループ１分チャレンジ free?

ストループ１分チャレンジ is free to download, with no in-app purchases.

### Do 3D記憶力テスト～脳トレ・認知症予防アプリ or ストループ１分チャレンジ have ads?

Both 3D記憶力テスト～脳トレ・認知症予防アプリ and ストループ１分チャレンジ show ads.

### Which is updated more often, 3D記憶力テスト～脳トレ・認知症予防アプリ or ストループ１分チャレンジ?

3D記憶力テスト～脳トレ・認知症予防アプリ ships an update every 29 months, and ストループ１分チャレンジ every 4 days. Most recently, 3D記憶力テスト～脳トレ・認知症予防アプリ was updated on October 6, 2026 and ストループ１分チャレンジ on October 28, 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.*