# 上课啦老师端 vs Sensor Recorder Pro

The clearest difference is in-app purchases: 上课啦老师端 at none against Sensor Recorder Pro's 1. 上课啦老师端 also leads on iOS requirement (11.0 vs 15.4). Sensor Recorder Pro's advantage is device support. On price there is nothing between them.

Both are free to download. Sensor Recorder Pro sells 1 one-off in-app purchase. 上课啦老师端 asks for nothing beyond the download.

## The numbers

| Metric | 上课啦老师端 | Sensor Recorder Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 4 weeks |
| Size | 31 MB | 3 MB |
| Requires iOS | **11.0** | 15.4 |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [北京阿拉校园科技有限公司](https://appshunter.io/developer/1061955261) | [晓聪 姜](https://appshunter.io/developer/6782490208) |

## What reviewers say

### 上课啦老师端

[App page](https://appshunter.io/ios/app/id6443558717)

**In-app purchases:** none


### Sensor Recorder Pro

[App page](https://appshunter.io/ios/app/sensor-recorder-pro/id6782758613)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Recording | $2.99 | one-time |


## Frequently asked questions

### Is 上课啦老师端 free?

上课啦老师端 is free to download, with no in-app purchases.

### Is Sensor Recorder Pro free?

Sensor Recorder Pro is free to download, with in-app purchases available.

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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.*