# チャットAI vs AIメールくん

The clearest difference is update cadence: AIメールくん at every 9 days against チャットAI's every 3 weeks. チャットAI's advantage is iOS requirement (14.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. チャットAI sells 1 in-app purchase, starting at $2.99 per 7 days and AIメールくん sells 1 in-app purchase, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

チャットAI ships an update every 3 weeks, AIメールくん every 9 days. The most recent releases landed on August 28, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | チャットAI | AIメールくん |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Freemium | — |
| Size | 11 MB | 4 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Akihiro Kokubo](https://appshunter.io/developer/1485855806) | [AppEngine](https://appshunter.io/developer/1684103190) |

## What reviewers say

### チャットAI

[App page](https://appshunter.io/ios/app/ai-ai/id6446063282)

This AI-powered chatbot provides instant, accurate responses to any question. Easily accessible on your smartphone, it supports Japanese and helps improve your writing skills. Experience the power of AI for conversation and assistance.

**Highlights:** Advanced AI for instant answers, Japanese language support, Improve writing skills, Easy smartphone access, AI-powered conversations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | per 7 days |


### AIメールくん

[App page](https://appshunter.io/ios/app/ai/id6470747443)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $6.99 | per 7 days |


## Frequently asked questions

### Is チャットAI free?

チャットAI is free to download, with in-app purchases available.

### Is AIメールくん free?

AIメールくん is free to download, with in-app purchases available.

### Do チャットAI or AIメールくん have ads?

Neither チャットAI nor AIメールくん shows ads.

### Which is updated more often, チャットAI or AIメールくん?

チャットAI ships an update every 3 weeks, and AIメールくん every 9 days. Most recently, チャットAI was updated on August 28, 2026 and AIメールくん on September 19, 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.*