# Chat Mind vs 论文岛

The clearest difference is update cadence: Chat Mind at every 5 days against 论文岛's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Chat Mind sells 4 in-app purchases, starting at $2.99 per 7 days and 论文岛 sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Chat Mind ships an update every 5 days, 论文岛 every 2 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Chat Mind | 论文岛 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chat-mind-ai/id1665478859/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | Freemium | — |
| Size | 22 MB | 42 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [美群 唐](https://appshunter.io/developer/1628513026) | [HH Tech Co.,Ltd](https://appshunter.io/developer/1774378182) |

## What reviewers say

### Chat Mind

[App page](https://appshunter.io/ios/app/chat-mind-ai/id1665478859)

This AI-powered assistant helps users write high-quality academic papers, optimize content, and translate languages. It offers expert guidance, grammar checks, and access to specialized knowledge across various industries. The app features a user-friendly interface for quick information retrieval and problem-solving.

**Highlights:** AI writing and paper guidance, Grammar and spell checking, AI translation services, Industry-specific knowledge bases, Voice and text input, Multi-modal content creation

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $4.99 | per month |
| Yearly | $39.99 | per year |
| Pro 会员 | $2.99 | one-time |


### 论文岛

[App page](https://appshunter.io/ios/app/ai-and/id6740133045)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $12.99 | per month |
| 年度会员 | $24.99 | per year |
| 终身会员 | $39.99 | one-time |


## Frequently asked questions

### Is Chat Mind free?

Chat Mind is free to download, with in-app purchases available.

### Is 论文岛 free?

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

### Do Chat Mind or 论文岛 have ads?

Neither Chat Mind nor 论文岛 shows ads.

### Which is updated more often, Chat Mind or 论文岛?

Chat Mind ships an update every 5 days, and 论文岛 every 2 months. Most recently, Chat Mind was updated on October 24, 2026 and 论文岛 on October 28, 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.*