# 補数チャレンジ！ vs 進数・補数変換

The clearest difference is device support: 進数・補数変換 at 2 against 補数チャレンジ！'s —. 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.

## The numbers

| Metric | 補数チャレンジ！ | 進数・補数変換 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Weekly |
| Size | 2 MB | 3 MB |
| Requires iOS | 17.2 | **16.0** |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kazuhiko Maruyama](https://appshunter.io/developer/1731223811) | [Manato Abe](https://appshunter.io/developer/1766487879) |

## What reviewers say

### 補数チャレンジ！

[App page](https://appshunter.io/ios/app/id6478446057)

**In-app purchases:** none


### 進数・補数変換

[App page](https://appshunter.io/ios/app/id6702007723)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 補数チャレンジ！ free?

補数チャレンジ！ is free to download, with no in-app purchases.

### Is 進数・補数変換 free?

進数・補数変換 is free to download, with no in-app purchases.

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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.*