# 环境空气检测 vs Poly EMO

The clearest difference is device support: 环境空气检测 at 2 against Poly EMO's —. Poly EMO's advantage is iOS requirement (9.0 vs 11.0). 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 | 环境空气检测 | Poly EMO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 36 months | — |
| Size | 36 MB | 33 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [莱靡电子科技(上海)有限公司](https://appshunter.io/developer/1445666432) | [CardApp Limited](https://appshunter.io/developer/539151439) |

## What reviewers say

### 环境空气检测

[App page](https://appshunter.io/ios/app/id1445666433)

**Features:** macOS Compatibility

**In-app purchases:** none


### Poly EMO

[App page](https://appshunter.io/ios/app/poly-emo/id1575307594)

**In-app purchases:** none


## Frequently asked questions

### Is 环境空气检测 free?

环境空气检测 is free to download, with no in-app purchases.

### Is Poly EMO free?

Poly EMO 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.*