# Air~Select vs Decibel Meter

The clearest difference is in-app purchases: Air~Select at none against Decibel Meter's 2. Air~Select also leads on rating (5.0 vs 4.8). Decibel Meter's advantage is update cadence (every 3 weeks vs every 6 months) and ratings volume (10 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Decibel Meter sells 2 in-app purchases, starting at $4.99 per month. Air~Select asks for nothing beyond the download.

Air~Select holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Decibel Meter has 10 ratings behind it against 1, so its average is the more settled of the two.

Air~Select ships an update every 6 months, Decibel Meter every 3 weeks. The most recent releases landed on October 12, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Air~Select | Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/airselect/id1348601736/reviews)** | [4.8 (10 ratings)](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id6482288270/reviews) |
| Number of ratings | 1 | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 32 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Subodh Nair](https://appshunter.io/developer/1232337002) | [Bustgrow Ltd](https://appshunter.io/developer/1729557461) |

## What reviewers say

### Air~Select

[App page](https://appshunter.io/ios/app/airselect/id1348601736)

This utility helps users select the appropriate air compressor based on critical technical specifications. It considers factors such as operating pressure and required airflow to guide your choice.

**Highlights:** Compressor selection tool, Technical specification input, Operating pressure consideration, Airflow requirement calculation, Guided selection process

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

**In-app purchases:** none


### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id6482288270)

Measure and understand ambient noise levels with this intuitive tool. It provides instant decibel readings, logs historical data with notes, and offers visual and auditory representations of sound. Ideal for ensuring safety, monitoring environments, or protecting hearing.

**Highlights:** Instant dB readings, Historical data logging, Add personal notes to recordings, Simple and intuitive interface, Real-time audio analysis, Visual and auditory sound representation

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $4.99 | per month |
| Premium Access | $39.99 | per year |


## Frequently asked questions

### Is Air~Select free?

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

### Is Decibel Meter free?

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

### Which has better reviews, Air~Select or Decibel Meter?

Air~Select is rated higher. Air~Select averages 5.0 out of 5 from 1 ratings, while Decibel Meter averages 4.8 from 10 ratings.

### Do Air~Select or Decibel Meter have ads?

Neither Air~Select nor Decibel Meter shows ads.

### Which is updated more often, Air~Select or Decibel Meter?

Air~Select ships an update every 6 months, and Decibel Meter every 3 weeks. Most recently, Air~Select was updated on October 12, 2026 and Decibel Meter on October 21, 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.*