# Hansen Ventilation vs x Decibel

The clearest difference is ads: Hansen Ventilation at none against x Decibel's shown. x Decibel's advantage is iOS requirement (13.0 vs 15.0). On price, 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.

## The numbers

| Metric | Hansen Ventilation | x Decibel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | — |
| Size | 14 MB | 43 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EP spa](https://appshunter.io/developer/1688557966) | [Singxi Limited](https://appshunter.io/developer/1844027284) |

## What reviewers say

### Hansen Ventilation

[App page](https://appshunter.io/ios/app/hansen-ventilation/id6503288430)

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

**In-app purchases:** none


### x Decibel

[App page](https://appshunter.io/ios/app/x-decibel/id6754000827)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hansen Ventilation free?

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

### Is x Decibel free?

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

### Do Hansen Ventilation or x Decibel have ads?

x Decibel shows ads; Hansen Ventilation does not.

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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.*