# dB Noise Meter vs Ventilation Systems

The clearest difference is in-app purchases: Ventilation Systems at none against dB Noise Meter's 5. Ventilation Systems also leads on iOS requirement (14.0 vs 16.6). dB Noise Meter's advantage is device support. On price there is nothing between them.

Both are free to download. dB Noise Meter sells 5 in-app purchases, starting at $6.99 per 7 days. Ventilation Systems asks for nothing beyond the download.

## The numbers

| Metric | dB Noise Meter | Ventilation Systems |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (122 ratings)](https://appshunter.io/ios/app/db-noise-meter/id1590850487/reviews)** | — |
| Number of ratings | **122** | — |
| Positive reviews | 15.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 222 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | **iPhone, iPad** | — |
| Age rating | +4 | 17+ |
| Developer | [Petr Polasek](https://appshunter.io/developer/1613323784) | [Artem Stoliarov](https://appshunter.io/developer/1439013528) |

## What reviewers say

### dB Noise Meter

[App page](https://appshunter.io/ios/app/db-noise-meter/id1590850487)

Measure ambient noise levels in decibels (dB) using your phone's microphone. Track real-time noise, identify loud appliances, and monitor your exposure to potentially harmful sound levels.

**Highlights:** Real-time decibel measurement, Noise level tracking, Appliance noise testing, Save noise measurements, Display min/max/avg dB

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 week | $6.99 | per 7 days |
| Premium 1 Month | $9.99 | per month |
| Premium 3 Months | $17.99 | per 3 months |
| Premium 6 Months | $19.99 | per 6 months |
| Premium 1 Year | $29.99 | per year |


### Ventilation Systems

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

**In-app purchases:** none


## Frequently asked questions

### Is dB Noise Meter free?

dB Noise Meter is free to download, with in-app purchases available.

### 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.*