# s＊単位変換 vs 単位図鑑

The clearest difference is iOS requirement: 単位図鑑 at 15.0 against s＊単位変換's 18.6. 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 | s＊単位変換 | 単位図鑑 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Size | 1 MB | 2 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seigo Mizouchi](https://appshunter.io/developer/1880010064) | [KOHEI YAMASHITA](https://appshunter.io/developer/1876841861) |

## What reviewers say

### s＊単位変換

[App page](https://appshunter.io/ios/app/s/id6759642495)

**Features:** macOS Compatibility

**In-app purchases:** none


### 単位図鑑

[App page](https://appshunter.io/ios/app/id6760615566)

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

**In-app purchases:** none


## Frequently asked questions

### Is s＊単位変換 free?

s＊単位変換 is free to download, with no in-app purchases.

### Is 単位図鑑 free?

単位図鑑 is free to download, with no in-app purchases.

### Do s＊単位変換 or 単位図鑑 have ads?

Neither s＊単位変換 nor 単位図鑑 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.*