# 气体监测 vs HF Cloud

The clearest difference is iOS requirement: 气体监测 at 8.0 against HF Cloud's 13.0. On price, update cadence, ads 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.

气体监测 ships an update every 2 months, HF Cloud every 3 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 气体监测 | HF Cloud |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 10 MB | 46 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [天津市基理科技股份有限公司](https://appshunter.io/developer/1238100085) | [Xi'an HuaFan Instrument co.,LTD.](https://appshunter.io/developer/1033049762) |

## What reviewers say

### 气体监测

[App page](https://appshunter.io/ios/app/id1238100086)

**Features:** macOS Compatibility

**In-app purchases:** none


### HF Cloud

[App page](https://appshunter.io/ios/app/hf-cloud/id1468441051)

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

**In-app purchases:** none


## Frequently asked questions

### Is 气体监测 free?

气体监测 is free to download, with no in-app purchases.

### Is HF Cloud free?

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

### Do 气体监测 or HF Cloud have ads?

Neither 气体监测 nor HF Cloud shows ads.

### Which is updated more often, 气体监测 or HF Cloud?

气体监测 ships an update every 2 months, and HF Cloud every 3 months. Most recently, 气体监测 was updated on October 29, 2026 and HF Cloud 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.*