# ReBrain vs AI単語帳｜赤シートに代わる次世代の暗記アプリ

The clearest difference is in-app purchases: AI単語帳｜赤シートに代わる次世代の暗記アプリ at none against ReBrain's 3. ReBrain's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. ReBrain sells 3 in-app purchases, starting at $1.99 per month. AI単語帳｜赤シートに代わる次世代の暗記アプリ asks for nothing beyond the download.

ReBrain ships an update every 10 days, AI単語帳｜赤シートに代わる次世代の暗記アプリ every 2 weeks. Both last shipped on September 12, 2026.

## The numbers

| Metric | ReBrain | AI単語帳｜赤シートに代わる次世代の暗記アプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Size | 86 MB | 5 MB |
| Requires iOS | 18.2 | 18.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ryota hatazawa](https://appshunter.io/developer/1765243887) | [Kouki Funaishi](https://appshunter.io/developer/1641264974) |

## What reviewers say

### ReBrain

[App page](https://appshunter.io/ios/app/rebrain-flashcards-app/id6742406188)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReBrain Pro 月額 | $1.99 | per month |
| ReBrain Pro 年額 | $5.99 | per year |
| ReBrain Pro 買い切り | $9.99 | one-time |


### AI単語帳｜赤シートに代わる次世代の暗記アプリ

[App page](https://appshunter.io/ios/app/ai/id6745920816)

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

**In-app purchases:** none


## Frequently asked questions

### Is ReBrain free?

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

### Is AI単語帳｜赤シートに代わる次世代の暗記アプリ free?

AI単語帳｜赤シートに代わる次世代の暗記アプリ is free to download, with no in-app purchases.

### Do ReBrain or AI単語帳｜赤シートに代わる次世代の暗記アプリ have ads?

AI単語帳｜赤シートに代わる次世代の暗記アプリ shows ads; ReBrain does not.

### Which is updated more often, ReBrain or AI単語帳｜赤シートに代わる次世代の暗記アプリ?

ReBrain ships an update every 10 days, and AI単語帳｜赤シートに代わる次世代の暗記アプリ every 2 weeks. Most recently, ReBrain was updated on September 12, 2026 and AI単語帳｜赤シートに代わる次世代の暗記アプリ on September 12, 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.*