# Decibel Check vs Air

The clearest difference is in-app purchases: Air at none against Decibel Check's 2. Decibel Check's advantage is iOS requirement (13.0 vs 26.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Decibel Check sells 2 in-app purchases, starting at $1.99 per month. Air asks for nothing beyond the download.

Decibel Check ships an update every 3 weeks, Air every 2 weeks. The most recent releases landed on October 12, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Decibel Check | Air |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/decibel-check/id6503355419/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 13 MB |
| Requires iOS | **13.0** | 26.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Evo Tec Labs @ Pepperbit Online](https://appshunter.io/developer/1665371293) | [Gerhard Lentschik](https://appshunter.io/developer/629988041) |

## What reviewers say

### Decibel Check

[App page](https://appshunter.io/ios/app/decibel-check/id6503355419)

Transform your smartphone into a precise sound level meter. Measure minimum, average, and maximum decibel levels with real-time visualizations and recording capabilities for detailed analysis. Gain insights into your auditory environment.

**Highlights:** Real-time Min, Avg, Max sound level measurement, Sound recording for analysis, Intuitive data visualizations, Clear and user-friendly interface, Precise sound measurements

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium MONTHLY | $1.99 | per month |
| Premium YEARLY | $9.99 | per year |


### Air

[App page](https://appshunter.io/ios/app/air-check/id6816738512)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Check free?

Decibel Check is free to download, with in-app purchases available.

### Is Air free?

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

### Do Decibel Check or Air have ads?

Neither Decibel Check nor Air shows ads.

### Which is updated more often, Decibel Check or Air?

Decibel Check ships an update every 3 weeks, and Air every 2 weeks. Most recently, Decibel Check was updated on October 12, 2026 and Air on October 29, 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.*