# Decibel Meter & Dosimeter vs Sonic MD

The clearest difference is in-app purchases: Sonic MD at none against Decibel Meter & Dosimeter's 3. Decibel Meter & Dosimeter's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Decibel Meter & Dosimeter sells 3 in-app purchases, starting at $0.99 per 7 days. Sonic MD asks for nothing beyond the download.

Decibel Meter & Dosimeter ships an update every 3 weeks, Sonic MD every 2 weeks. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Decibel Meter & Dosimeter | Sonic MD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (18 ratings)](https://appshunter.io/ios/app/decibel-meter-and-dosimeter/id6740248468/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 23 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mobile Card Games & Travel Apps LLC](https://appshunter.io/developer/453389232) | [ANDREA FERRARI](https://appshunter.io/developer/6809872567) |

## What reviewers say

### Decibel Meter & Dosimeter

[App page](https://appshunter.io/ios/app/decibel-meter-and-dosimeter/id6740248468)

This app transforms your iPhone into a professional sound level meter. It provides real-time decibel monitoring, instant feedback on noise intensity, and smart notifications for safety limits. Track your noise exposure over time with detailed history and exportable reports.

**Highlights:** Real-time decibel monitoring, Noise exposure limit tracking, Detailed noise history, Exportable reports, Smart notifications, Professional calibration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $0.99 | per 7 days |
| Annual Subscription | $24.99 | per year |
| Pro - NIOSH Noise Exposure | $4.99 | one-time |


### Sonic MD

[App page](https://appshunter.io/ios/app/sonic-md/id6809872565)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter & Dosimeter free?

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

### Is Sonic MD free?

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

### Do Decibel Meter & Dosimeter or Sonic MD have ads?

Sonic MD shows ads; Decibel Meter & Dosimeter does not.

### Which is updated more often, Decibel Meter & Dosimeter or Sonic MD?

Decibel Meter & Dosimeter ships an update every 3 weeks, and Sonic MD every 2 weeks. Most recently, Decibel Meter & Dosimeter was updated on October 30, 2026 and Sonic MD on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*