# 代筆ドール、お望みのお手紙を代筆いたします vs AI Letter

The clearest difference is update cadence: AI Letter at every 3 days against 代筆ドール、お望みのお手紙を代筆いたします's every 8 days. AI Letter also leads on iOS requirement (15.1 vs 17.0). 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.

代筆ドール、お望みのお手紙を代筆いたします ships an update every 8 days, AI Letter every 3 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 代筆ドール、お望みのお手紙を代筆いたします | AI Letter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 8 days | **Every 3 days** |
| Size | 15 MB | 28 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kazuaki Takahashi](https://appshunter.io/developer/1691521543) | [KKANG'S LAB](https://appshunter.io/developer/1122663875) |

## What reviewers say

### 代筆ドール、お望みのお手紙を代筆いたします

[App page](https://appshunter.io/ios/app/id6465687786)

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

**In-app purchases:** none


### AI Letter

[App page](https://appshunter.io/ios/app/ai-letter-write-and-share/id6757287624)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 代筆ドール、お望みのお手紙を代筆いたします free?

代筆ドール、お望みのお手紙を代筆いたします is free to download, with no in-app purchases.

### Is AI Letter free?

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

### Do 代筆ドール、お望みのお手紙を代筆いたします or AI Letter have ads?

Both 代筆ドール、お望みのお手紙を代筆いたします and AI Letter show ads.

### Which is updated more often, 代筆ドール、お望みのお手紙を代筆いたします or AI Letter?

代筆ドール、お望みのお手紙を代筆いたします ships an update every 8 days, and AI Letter every 3 days. Most recently, 代筆ドール、お望みのお手紙を代筆いたします was updated on November 7, 2026 and AI Letter on October 31, 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.*