# Flash Mental Calc vs フラッシュ暗算ドリル

The clearest difference is ads: Flash Mental Calc at none against フラッシュ暗算ドリル's shown. フラッシュ暗算ドリル's advantage is iOS requirement (13.0 vs 17.0). On price, 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 | Flash Mental Calc | フラッシュ暗算ドリル |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Size | 5 MB | 24 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wenbo Chen](https://appshunter.io/developer/1884329176) | [Katsuyuki Hayashi](https://appshunter.io/developer/1597263179) |

## What reviewers say

### Flash Mental Calc

[App page](https://appshunter.io/ios/app/flash-mental-calc/id6760411165)

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

**In-app purchases:** none


### フラッシュ暗算ドリル

[App page](https://appshunter.io/ios/app/id6760587745)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flash Mental Calc free?

Flash Mental Calc is free to download, with no in-app purchases.

### Is フラッシュ暗算ドリル free?

フラッシュ暗算ドリル is free to download, with no in-app purchases.

### Do Flash Mental Calc or フラッシュ暗算ドリル have ads?

フラッシュ暗算ドリル shows ads; Flash Mental Calc 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.*