# AI写作助手 vs 知我 AI

The clearest difference is in-app purchases: 知我 AI at none against AI写作助手's 4. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AI写作助手 sells 4 in-app purchases, starting at $4.99 per month. 知我 AI asks for nothing beyond the download.

## The numbers

| Metric | AI写作助手 | 知我 AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 23 MB | 3 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [俊发 毕](https://appshunter.io/developer/1836636638) | [杰栋 何](https://appshunter.io/developer/1896629335) |

## What reviewers say

### AI写作助手

[App page](https://appshunter.io/ios/app/ai-ai/id6747694144)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月会员 | $4.99 | per month |
| 连续包季会员 | $14.99 | per 3 months |
| 连续包年会员 | $29.99 | per year |
| 永久会员 | $39.99 | one-time |


### 知我 AI

[App page](https://appshunter.io/ios/app/ai/id6780978880)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI写作助手 free?

AI写作助手 is free to download, with in-app purchases available.

### Is 知我 AI free?

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

### Do AI写作助手 or 知我 AI have ads?

Neither AI写作助手 nor 知我 AI 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.*