# 锐研云调查 vs EcoTrac

The clearest difference is device support: EcoTrac at 2 against 锐研云调查'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 | 锐研云调查 | EcoTrac |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 3 weeks |
| Size | 42 MB | 43 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [上海萌泰数据科技股份有限公司](https://appshunter.io/developer/1191783692) | [Maxim Smart Manufacturing Co., Ltd](https://appshunter.io/developer/1544401850) |

## What reviewers say

### 锐研云调查

[App page](https://appshunter.io/ios/app/id1361023693)

**In-app purchases:** none


### EcoTrac

[App page](https://appshunter.io/ios/app/ecotrac/id1544401848)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 锐研云调查 free?

锐研云调查 is free to download, with no in-app purchases.

### Is EcoTrac free?

EcoTrac 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.*