# 単位図鑑 vs MathFormulaQuiz

The clearest difference is iOS requirement: 単位図鑑 at 15.0 against MathFormulaQuiz's 26.5. 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 | 単位図鑑 | MathFormulaQuiz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 2 MB | 13 MB |
| Requires iOS | **15.0** | 26.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KOHEI YAMASHITA](https://appshunter.io/developer/1876841861) | [ryuya matsuo](https://appshunter.io/developer/1841066123) |

## What reviewers say

### 単位図鑑

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

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

**In-app purchases:** none


### MathFormulaQuiz

[App page](https://appshunter.io/ios/app/mathformulaquiz/id6818936443)

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

**In-app purchases:** none


## Frequently asked questions

### Is 単位図鑑 free?

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

### Is MathFormulaQuiz free?

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

### Do 単位図鑑 or MathFormulaQuiz have ads?

Neither 単位図鑑 nor MathFormulaQuiz 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.*