# MyColumbus vs Ventilation Systems

The clearest difference is device support: MyColumbus at 3 against Ventilation Systems's —. On price, in-app purchases and iOS requirement 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 | MyColumbus | Ventilation Systems |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 2 months | — |
| Size | 8 MB | 222 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [COLUMBUS, PP](https://appshunter.io/developer/1446254101) | [Artem Stoliarov](https://appshunter.io/developer/1439013528) |

## What reviewers say

### MyColumbus

[App page](https://appshunter.io/ios/app/mycolumbus/id6444433057)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ventilation Systems

[App page](https://appshunter.io/ios/app/ventilation-systems-ar/id6471626322)

**In-app purchases:** none


## Frequently asked questions

### Is MyColumbus free?

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

### Is Ventilation Systems free?

Ventilation Systems 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.*