# 19×19 暗算脳トレ vs 100マスランキング

The clearest difference is iOS requirement: 19×19 暗算脳トレ at 13.0 against 100マスランキング's 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.

## The numbers

| Metric | 19×19 暗算脳トレ | 100マスランキング |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 9 days | — |
| Size | 38 MB | 8 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Atsushi Isai](https://appshunter.io/developer/1881655484) | [kazuki ohuchi](https://appshunter.io/developer/1896738377) |

## What reviewers say

### 19×19 暗算脳トレ

[App page](https://appshunter.io/ios/app/1919/id6763848289)

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

**In-app purchases:** none


### 100マスランキング

[App page](https://appshunter.io/ios/app/100/id6777680374)

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

**In-app purchases:** none


## Frequently asked questions

### Is 19×19 暗算脳トレ free?

19×19 暗算脳トレ is free to download, with no in-app purchases.

### Is 100マスランキング free?

100マスランキング is free to download, with no in-app purchases.

### Do 19×19 暗算脳トレ or 100マスランキング have ads?

Both 19×19 暗算脳トレ and 100マスランキング show ads.

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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.*