# 看空气监测版 vs NSguard

The clearest difference is update cadence: NSguard at weekly against 看空气监测版's every 2 months. 看空气监测版's advantage is iOS requirement (13.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

看空气监测版 ships an update every 2 months, NSguard weekly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 看空气监测版 | NSguard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 13 MB | 3 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Everbest Machinery Industry Co.,Ltd](https://appshunter.io/developer/564470332) | [增阳 赵](https://appshunter.io/developer/1895564529) |

## What reviewers say

### 看空气监测版

[App page](https://appshunter.io/ios/app/id1251838951)

**Features:** macOS Compatibility

**In-app purchases:** none


### NSguard

[App page](https://appshunter.io/ios/app/nsguard/id6779931459)

**In-app purchases:** none


## Frequently asked questions

### Is 看空气监测版 free?

看空气监测版 is free to download, with no in-app purchases.

### Is NSguard free?

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

### Do 看空气监测版 or NSguard have ads?

Neither 看空气监测版 nor NSguard shows ads.

### Which is updated more often, 看空气监测版 or NSguard?

看空气监测版 ships an update every 2 months, and NSguard weekly. Most recently, 看空气监测版 was updated on October 26, 2026 and NSguard on October 25, 2026.

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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.*