# 文字は何色？（らくらく脳トレ！シリーズ） vs MIMI 耳

The clearest difference is in-app purchases: MIMI 耳 at none against 文字は何色？（らくらく脳トレ！シリーズ）'s 1. MIMI 耳 also leads on update cadence (every 5 days vs every 18 months). 文字は何色？（らくらく脳トレ！シリーズ）'s advantage is device support (3 vs 1) and iOS requirement (6.1 vs 17.0). On price and ads there is nothing between them.

Both are free to download. 文字は何色？（らくらく脳トレ！シリーズ） sells 1 one-off in-app purchase. MIMI 耳 asks for nothing beyond the download.

文字は何色？（らくらく脳トレ！シリーズ） ships an update every 18 months, MIMI 耳 every 5 days. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 文字は何色？（らくらく脳トレ！シリーズ） | MIMI 耳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 5 days** |
| Size | 32 MB | 1 MB |
| Requires iOS | **6.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [UNI-TY INC.](https://appshunter.io/developer/433109975) | [Shota Katsuyama](https://appshunter.io/developer/6792005346) |

## What reviewers say

### 文字は何色？（らくらく脳トレ！シリーズ）

[App page](https://appshunter.io/ios/app/id913986349)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $2.99 | one-time |


### MIMI 耳

[App page](https://appshunter.io/ios/app/mimi/id6792005078)

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

**In-app purchases:** none


## Frequently asked questions

### Is 文字は何色？（らくらく脳トレ！シリーズ） free?

文字は何色？（らくらく脳トレ！シリーズ） is free to download, with in-app purchases available.

### Is MIMI 耳 free?

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

### Do 文字は何色？（らくらく脳トレ！シリーズ） or MIMI 耳 have ads?

Neither 文字は何色？（らくらく脳トレ！シリーズ） nor MIMI 耳 shows ads.

### Which is updated more often, 文字は何色？（らくらく脳トレ！シリーズ） or MIMI 耳?

文字は何色？（らくらく脳トレ！シリーズ） ships an update every 18 months, and MIMI 耳 every 5 days. Most recently, 文字は何色？（らくらく脳トレ！シリーズ） was updated on October 24, 2026 and MIMI 耳 on October 15, 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.*