# どーれかな？（数の理解版） vs 指数・対数フラッシュ暗算

The clearest difference is ads: どーれかな？（数の理解版） at none against 指数・対数フラッシュ暗算's shown. On price, in-app purchases, device support 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 | どーれかな？（数の理解版） | 指数・対数フラッシュ暗算 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Weekly |
| Size | 27 MB | 4 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kouichi INAFUKU](https://appshunter.io/developer/438372899) | [masahiko akita](https://appshunter.io/developer/1891674153) |

## What reviewers say

### どーれかな？（数の理解版）

[App page](https://appshunter.io/ios/app/id6467016985)

**Features:** macOS Compatibility

**In-app purchases:** none


### 指数・対数フラッシュ暗算

[App page](https://appshunter.io/ios/app/id6770951661)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is どーれかな？（数の理解版） free?

どーれかな？（数の理解版） is free to download, with no in-app purchases.

### Is 指数・対数フラッシュ暗算 free?

指数・対数フラッシュ暗算 is free to download, with no in-app purchases.

### Do どーれかな？（数の理解版） or 指数・対数フラッシュ暗算 have ads?

指数・対数フラッシュ暗算 shows ads; どーれかな？（数の理解版） does not.

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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.*