# 【CO2センサー】換気エアミエル vs Macho Log

The clearest difference is device support: Macho Log at 2 against 【CO2センサー】換気エアミエル's —. 【CO2センサー】換気エアミエル's advantage is iOS requirement (12.1 vs 15.0). 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 | 【CO2センサー】換気エアミエル | Macho Log |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 9 days |
| Size | 37 MB | 41 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | — | **iPhone, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Step One Limited](https://appshunter.io/developer/646296997) | [Katsuhide Leung](https://appshunter.io/developer/6775420732) |

## What reviewers say

### 【CO2センサー】換気エアミエル

[App page](https://appshunter.io/ios/app/co2/id1549479731)

**In-app purchases:** none


### Macho Log

[App page](https://appshunter.io/ios/app/macho-log/id6775420730)

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

**In-app purchases:** none


## Frequently asked questions

### Is 【CO2センサー】換気エアミエル free?

【CO2センサー】換気エアミエル is free to download, with no in-app purchases.

### Is Macho Log free?

Macho Log 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.*