# FMS vs 聊书AI

The clearest difference is in-app purchases: FMS at none against 聊书AI's 3. FMS also leads on iOS requirement (10.0 vs 13.0). 聊书AI's advantage is update cadence (every 4 days vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 聊书AI sells 3 in-app purchases, starting at $6.99 per month. FMS asks for nothing beyond the download.

FMS ships an update every 5 weeks, 聊书AI every 4 days. The most recent releases landed on October 5, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | FMS | 聊书AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Size | 50 MB | 133 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [深圳设施之家](https://appshunter.io/developer/1193110113) | [群 谢](https://appshunter.io/developer/1473924121) |

## What reviewers say

### FMS

[App page](https://appshunter.io/ios/app/fms/id1343078497)

**Features:** macOS Compatibility

**In-app purchases:** none


### 聊书AI

[App page](https://appshunter.io/ios/app/ai/id6744514782)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 聊书AI包月VIP | $6.99 | per month |
| 聊书AI包年会员 | $49.99 | per year |
| 聊书AI 播客畅听卡 | $0.99 | one-time |


## Frequently asked questions

### Is FMS free?

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

### Is 聊书AI free?

聊书AI is free to download, with in-app purchases available.

### Do FMS or 聊书AI have ads?

Neither FMS nor 聊书AI shows ads.

### Which is updated more often, FMS or 聊书AI?

FMS ships an update every 5 weeks, and 聊书AI every 4 days. Most recently, FMS was updated on October 5, 2026 and 聊书AI on September 27, 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.*