# 公文岛 vs 红薯文案神器

The clearest difference is device support: 公文岛 at 2 against 红薯文案神器's —. 红薯文案神器's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. 公文岛 sells 4 in-app purchases, starting at $2.99 per 7 days and 红薯文案神器 sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

公文岛 ships an update every 3 weeks, 红薯文案神器 monthly. Both last shipped on November 4, 2026.

## The numbers

| Metric | 公文岛 | 红薯文案神器 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/ai-and/id6476187281/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Freemium | — |
| Size | 24 MB | 57 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Mge Information Technology Co.,Ltd](https://appshunter.io/developer/1593551251) | [Hainan Bozhong Science & Technology Co., Ltd.](https://appshunter.io/developer/1760113455) |

## What reviewers say

### 公文岛

[App page](https://appshunter.io/ios/app/ai-and/id6476187281)

This AI-powered writing tool assists with various content creation needs, from short videos and marketing copy to formal documents and daily reports. It offers features like content generation, rewriting, and a comprehensive knowledge assistant to spark creativity and boost efficiency.

**Highlights:** AI-powered content generation, Text rewriting and paraphrasing, Formal document and report templates, Knowledge assistant for queries, Article expansion and continuation, Text summarization and extraction

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $2.99 | per 7 days |
| 月会员 | $6.99 | per month |
| 年会员 | $14.99 | per year |
| 永久会员 | $24.99 | one-time |


### 红薯文案神器

[App page](https://appshunter.io/ios/app/id6590619985)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 红薯文案神器-连续包周-无限版 | $3.99 | per 7 days |
| 红薯文案神器-连续包月-无限版 | $8.99 | per month |
| 红薯文案神器-连续包季-无限版 | $19.99 | per 3 months |
| 红薯文案神器-连续包年-无限版 | $69.99 | per year |


## Frequently asked questions

### Is 公文岛 free?

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

### Is 红薯文案神器 free?

红薯文案神器 is free to download, with in-app purchases available.

### Which is updated more often, 公文岛 or 红薯文案神器?

公文岛 ships an update every 3 weeks, and 红薯文案神器 monthly. Most recently, 公文岛 was updated on November 4, 2026 and 红薯文案神器 on November 4, 2026.

---

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