# 听苏 vs 小蓝书

The clearest difference is in-app purchases: 听苏 at none against 小蓝书's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 小蓝书 sells 3 one-off in-app purchases. 听苏 asks for nothing beyond the download.

## The numbers

| Metric | 听苏 | 小蓝书 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 93 MB | 30 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [奥博铁克(苏州)智能科技有限公司](https://appshunter.io/developer/1597748881) | [宗挺 罗](https://appshunter.io/developer/1655103859) |

## What reviewers say

### 听苏

[App page](https://appshunter.io/ios/app/id6446015043)

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

**In-app purchases:** none


### 小蓝书

[App page](https://appshunter.io/ios/app/id6758568637)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30天会员 | $1.99 | one-time |
| 90天会员 | $2.99 | one-time |
| 一年会员 | $5.99 | one-time |


## Frequently asked questions

### Is 听苏 free?

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

### Is 小蓝书 free?

小蓝书 is free to download, with in-app purchases available.

### Do 听苏 or 小蓝书 have ads?

Neither 听苏 nor 小蓝书 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.*