# Decibel Meter · Sound Analyzer vs M2Cloud Diagnostic

The clearest difference is in-app purchases: M2Cloud Diagnostic at none against Decibel Meter · Sound Analyzer's 8. M2Cloud Diagnostic also leads on update cadence (monthly vs every 2 months) and iOS requirement (15.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Decibel Meter · Sound Analyzer sells 8 in-app purchases, starting at $1.99 per 7 days. M2Cloud Diagnostic asks for nothing beyond the download.

Decibel Meter · Sound Analyzer ships an update every 2 months, M2Cloud Diagnostic monthly. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Decibel Meter · Sound Analyzer | M2Cloud Diagnostic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.3K ratings)](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1624503658/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 78.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Subscription | — |
| Size | 41 MB | 22 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) | [M2Cloud LLP](https://appshunter.io/developer/1822765700) |

## What reviewers say

### Decibel Meter · Sound Analyzer

[App page](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1624503658)

Measure ambient noise levels and sound exposure duration in real-time. This app displays acoustic intensity in decibels with detailed visual reports and supports photo/video overlays with noise data. Protect your health from noise pollution.

**Highlights:** Real-time decibel meter, MIN, AVG, MAX sound level display, Noise dosimeter (NIOSH/OSHA compliant), Photo and video with noise overlay, Record measurement results, Data saving feature

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $1.99 | per 7 days |
| Weekly pro access | $3.99 | per 7 days |
| Sound Level Meter (dB) PRO | $3.99 | per 7 days |
| Monthly pro access | $6.99 | per month |
| Yearly Access | $6.99 | per year |
| Decibel Meter & Dosimeter PRO | $6.99 | per month |
| Sound Meter & Dosimeter PRO | $12.99 | per year |
| Yearly pro access | $12.99 | per year |

**What reviewers like**

- 🚀 Great app
- 👍 Recommended
- 💡 Life Saving
- 👍 Good job
- 👍 Fantastic for visual documentation

**What reviewers complain about**

- 🐛 Bad app
- 🐛 Can't test
- 🐛 Subscription pop-up issues
- 🐛 Doesn't work unless you pay

**Reported bugs**

- Microphone issues
- Subscription paywall

**Requested features**

- Make more apps like this one


### M2Cloud Diagnostic

[App page](https://appshunter.io/ios/app/m2cloud-diagnostic/id6747757030)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter · Sound Analyzer free?

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

### Is M2Cloud Diagnostic free?

M2Cloud Diagnostic is free to download, with no in-app purchases.

### Do Decibel Meter · Sound Analyzer or M2Cloud Diagnostic have ads?

Neither Decibel Meter · Sound Analyzer nor M2Cloud Diagnostic shows ads.

### Which is updated more often, Decibel Meter · Sound Analyzer or M2Cloud Diagnostic?

Decibel Meter · Sound Analyzer ships an update every 2 months, and M2Cloud Diagnostic monthly. Most recently, Decibel Meter · Sound Analyzer was updated on October 24, 2026 and M2Cloud Diagnostic on October 13, 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.*