# クレイジー英語クイズ vs 脳速算

The clearest difference is ads: 脳速算 at none against クレイジー英語クイズ's shown. クレイジー英語クイズ's advantage is iOS requirement (13.0 vs 16.4). On price, update cadence, 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.

クレイジー英語クイズ ships an update every 4 months, 脳速算 every 5 months. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | クレイジー英語クイズ | 脳速算 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (9 ratings)](https://appshunter.io/ios/app/id1219784907/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 72.4% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 5 months |
| Size | 149 MB | 43 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [HENN Inc.](https://appshunter.io/developer/734265844) | [Tatsuya Kawai](https://appshunter.io/developer/1788260421) |

## What reviewers say

### クレイジー英語クイズ

[App page](https://appshunter.io/ios/app/id1219784907)

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

**In-app purchases:** none


### 脳速算

[App page](https://appshunter.io/ios/app/id6742348087)

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

**In-app purchases:** none


## Frequently asked questions

### Is クレイジー英語クイズ free?

クレイジー英語クイズ is free to download, with no in-app purchases.

### Is 脳速算 free?

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

### Do クレイジー英語クイズ or 脳速算 have ads?

クレイジー英語クイズ shows ads; 脳速算 does not.

### Which is updated more often, クレイジー英語クイズ or 脳速算?

クレイジー英語クイズ ships an update every 4 months, and 脳速算 every 5 months. Most recently, クレイジー英語クイズ was updated on November 11, 2026 and 脳速算 on November 8, 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.*