# 脳速算 vs ウミガメのスープ

The clearest difference is ads: 脳速算 at none against ウミガメのスープ's shown. 脳速算 also leads on device support (3 vs 1). ウミガメのスープ's advantage is update cadence (every 10 days vs every 5 months). On price, in-app purchases and iOS requirement there is nothing between them.

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

脳速算 ships an update every 5 months, ウミガメのスープ every 10 days. The most recent releases landed on October 3, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | 脳速算 | ウミガメのスープ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 10 days** |
| Size | 24 MB | 40 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Tatsuya Kawai](https://appshunter.io/developer/1788260421) | [Takumi Tomita](https://appshunter.io/developer/6787989996) |

## What reviewers say

### 脳速算

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ウミガメのスープ

[App page](https://appshunter.io/ios/app/id6790432078)

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

**In-app purchases:** none


## Frequently asked questions

### Is 脳速算 free?

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

### Is ウミガメのスープ free?

ウミガメのスープ is free to download, with no in-app purchases.

### Do 脳速算 or ウミガメのスープ have ads?

ウミガメのスープ shows ads; 脳速算 does not.

### Which is updated more often, 脳速算 or ウミガメのスープ?

脳速算 ships an update every 5 months, and ウミガメのスープ every 10 days. Most recently, 脳速算 was updated on October 3, 2026 and ウミガメのスープ on October 20, 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.*