# TRMS vs 东莞水质监测

The clearest difference is device support: TRMS at 2 against 东莞水质监测's —. 东莞水质监测's advantage is iOS requirement (9.0 vs 12.0). On price and in-app purchases 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 | TRMS | 东莞水质监测 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 2 months | — |
| Size | 63 MB | 56 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [上海嘀友网络科技有限公司](https://appshunter.io/developer/1087699404) | [广东科创智水科技有限公司](https://appshunter.io/developer/1587810032) |

## What reviewers say

### TRMS

[App page](https://appshunter.io/ios/app/trms/id6446394584)

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

**In-app purchases:** none


### 东莞水质监测

[App page](https://appshunter.io/ios/app/id6448940991)

**In-app purchases:** none


## Frequently asked questions

### Is TRMS free?

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

### Is 东莞水质监测 free?

东莞水质监测 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.*