# 進数・補数変換 vs HTMLの教科書

The clearest difference is price: 進数・補数変換 at Free against HTMLの教科書's $1.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

進数・補数変換 is free to download; HTMLの教科書 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 進数・補数変換 | HTMLの教科書 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 3 MB | 21 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Manato Abe](https://appshunter.io/developer/1766487879) | [Creatopia Inc.](https://appshunter.io/developer/1523447963) |

## What reviewers say

### 進数・補数変換

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

**Features:** macOS Compatibility

**In-app purchases:** none


### HTMLの教科書

[App page](https://appshunter.io/ios/app/html/id6739200605)

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

**In-app purchases:** none


## Frequently asked questions

### Is 進数・補数変換 free?

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

### Is HTMLの教科書 free?

HTMLの教科書 costs $1.99, with no in-app purchases.

### Do 進数・補数変換 or HTMLの教科書 have ads?

Neither 進数・補数変換 nor HTMLの教科書 shows 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.*