# CommonDivisor vs オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ

The clearest difference is in-app purchases: CommonDivisor at none against オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ's 2. CommonDivisor also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (16.6 vs 18.1). オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ sells 2 in-app purchases, starting at $5.99 per month. CommonDivisor asks for nothing beyond the download.

CommonDivisor ships an update every 5 days, オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ every 2 weeks. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CommonDivisor | オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 19 MB | 27 MB |
| Requires iOS | **16.6** | 18.1 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Katsuhiko Yao](https://appshunter.io/developer/1543188534) | [Ryota Koda](https://appshunter.io/developer/1834053321) |

## What reviewers say

### CommonDivisor

[App page](https://appshunter.io/ios/app/commondivisor/id6746661138)

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

**In-app purchases:** none


### オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ

[App page](https://appshunter.io/ios/app/ai/id6753962775)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Osaraiのプロプラン（月額） | $5.99 | per month |
| Osaraiのプロプラン（年額） | $49.99 | per year |


## Frequently asked questions

### Is CommonDivisor free?

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

### Is オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ free?

オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ is free to download, with in-app purchases available.

### Do CommonDivisor or オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ have ads?

CommonDivisor shows ads; オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ does not.

### Which is updated more often, CommonDivisor or オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ?

CommonDivisor ships an update every 5 days, and オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ every 2 weeks. Most recently, CommonDivisor was updated on October 15, 2026 and オサライ｜「なんとなく覚えた」をなくすAI搭載学習アプリ on October 25, 2026.

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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.*