# 対位法トレーニング vs KeyJaan!

The clearest difference is in-app purchases: 対位法トレーニング at none against KeyJaan!'s 1. 対位法トレーニング also leads on iOS requirement (15.4 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. KeyJaan! sells 1 one-off in-app purchase. 対位法トレーニング asks for nothing beyond the download.

## The numbers

| Metric | 対位法トレーニング | KeyJaan! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | — |
| Size | 166 MB | 90 MB |
| Requires iOS | **15.4** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Hiroaki Toya](https://appshunter.io/developer/1515661642) | [Mamiko Tsukamoto](https://appshunter.io/developer/1837855636) |

## What reviewers say

### 対位法トレーニング

[App page](https://appshunter.io/ios/app/id1642003400)

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

**In-app purchases:** none


### KeyJaan!

[App page](https://appshunter.io/ios/app/keyjaan/id6789836028)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KeyJaan Pro | $9.99 | one-time |


## Frequently asked questions

### Is 対位法トレーニング free?

対位法トレーニング is free to download, with no in-app purchases.

### Is KeyJaan! free?

KeyJaan! is free to download, with in-app purchases available.

### Do 対位法トレーニング or KeyJaan! have ads?

Neither 対位法トレーニング nor KeyJaan! 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.*