# Chat写作助手 vs 21世纪教育网

The clearest difference is in-app purchases: 21世纪教育网 at none against Chat写作助手's 6. Chat写作助手's advantage is ads (none vs shown) and update cadence (every 5 days vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Chat写作助手 sells 6 in-app purchases, starting at $4.99 per 7 days. 21世纪教育网 asks for nothing beyond the download.

Chat写作助手 ships an update every 5 days, 21世纪教育网 every 3 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Chat写作助手 | 21世纪教育网 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 3 months |
| Size | 33 MB | 26 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [启华 易](https://appshunter.io/developer/1718473417) | [玉恒 王](https://appshunter.io/developer/1896481055) |

## What reviewers say

### Chat写作助手

[App page](https://appshunter.io/ios/app/chat-ai/id6473689504)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $4.99 | per 7 days |
| 月会员 | $9.99 | per month |
| 季VIP | $14.99 | per 3 months |
| 年会员 | $24.99 | per year |
| 限时永久会员 | $14.99 | one-time |
| 永久会员 | $29.99 | one-time |


### 21世纪教育网

[App page](https://appshunter.io/ios/app/21/id6768590312)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chat写作助手 free?

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

### Is 21世纪教育网 free?

21世纪教育网 is free to download, with no in-app purchases.

### Do Chat写作助手 or 21世纪教育网 have ads?

21世纪教育网 shows ads; Chat写作助手 does not.

### Which is updated more often, Chat写作助手 or 21世纪教育网?

Chat写作助手 ships an update every 5 days, and 21世纪教育网 every 3 months. Most recently, Chat写作助手 was updated on October 30, 2026 and 21世纪教育网 on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*