# 素数検定 vs Sosu der

The clearest difference is device support: Sosu der at 3 against 素数検定'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 | 素数検定 | Sosu der |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | Yes |
| Update frequency | — | Every 4 months |
| Size | 4 MB | 140 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [kenichi kato](https://appshunter.io/developer/913467537) | [Hirobumi Onishi](https://appshunter.io/developer/1740115066) |

## What reviewers say

### 素数検定

[App page](https://appshunter.io/ios/app/id6450617905)

**In-app purchases:** none


### Sosu der

[App page](https://appshunter.io/ios/app/sosu-der/id6483364985)

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

**In-app purchases:** none


## Frequently asked questions

### Is 素数検定 free?

素数検定 is free to download, with no in-app purchases.

### Is Sosu der free?

Sosu der 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.*