# とけいにチャレンジ！！ vs 記憶KEEPER

The clearest difference is iOS requirement: とけいにチャレンジ！！ at 11.0 against 記憶KEEPER's 15.0. 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 | とけいにチャレンジ！！ | 記憶KEEPER |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Size | 57 MB | 4 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [koichi kodama](https://appshunter.io/developer/1679265192) | [nao watanabe](https://appshunter.io/developer/1896686911) |

## What reviewers say

### とけいにチャレンジ！！

[App page](https://appshunter.io/ios/app/id6446818704)

**In-app purchases:** none


### 記憶KEEPER

[App page](https://appshunter.io/ios/app/keeper/id6769772312)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is とけいにチャレンジ！！ free?

とけいにチャレンジ！！ is free to download, with no in-app purchases.

### Is 記憶KEEPER free?

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

### Do とけいにチャレンジ！！ or 記憶KEEPER have ads?

Neither とけいにチャレンジ！！ nor 記憶KEEPER 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.*