# 听课 vs 趣质检

The clearest difference is device support: 趣质检 at 2 against 听课's —. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 听课 | 趣质检 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 5 weeks |
| Size | 687 MB | 40 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Neunit System Co.,Ltd.](https://appshunter.io/developer/1529841523) | [广州研趣信息科技有限公司](https://appshunter.io/developer/1121496665) |

## What reviewers say

### 听课

[App page](https://appshunter.io/ios/app/id6451920041)

**In-app purchases:** none


### 趣质检

[App page](https://appshunter.io/ios/app/id6472036125)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 听课 free?

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

### Is 趣质检 free?

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

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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.*