# dB vs Decibel Pro

The clearest difference is rating: Decibel Pro at 4.4 against dB's 1.0. Decibel Pro also leads on ratings volume (75 vs 1). dB's advantage is update cadence (every 3 weeks vs every 36 months) and iOS requirement (11.0 vs 16.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Decibel Pro holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Decibel Pro has 75 ratings behind it against 1, so its average is the more settled of the two.

dB ships an update every 3 weeks, Decibel Pro every 36 months. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | dB | Decibel Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/db-tester/id1441925884/reviews) | **[4.4 (75 ratings)](https://appshunter.io/ios/app/decibel-pro-sound-level-meter/id6471412443/reviews)** |
| Number of ratings | 1 | **75** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 36 months |
| Monetization | Free | Free |
| Size | 6 MB | 14 MB |
| Requires iOS | **11.0** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Jumaoyuan Science and Technology Co., Ltd.](https://appshunter.io/developer/1327619798) | [Emre Can Altaca](https://appshunter.io/developer/1589836507) |

## What reviewers say

### dB

[App page](https://appshunter.io/ios/app/db-tester/id1441925884)

This utility app allows Bluetooth control of a meter for recording, reading, and deleting data. Visualize parameter trends with graphical curves and receive timely alerts for accurate measurements.

**Highlights:** Bluetooth meter control, Record, read, and delete data, Visualize parameter trends with curves, Accurate alarm function, Data analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Decibel Pro

[App page](https://appshunter.io/ios/app/decibel-pro-sound-level-meter/id6471412443)

Transform your device into a professional sound level meter and noise dosimeter. Track real-time audio levels, monitor daily noise exposure, and generate detailed reports with photos and videos. Customize settings for various environments and receive alerts for loud noises.

**Highlights:** Real-time sound level readings (dBA, dBC, dB), Noise dosimeter with OSHA/NIOSH standards, Background measurement with Live Activity, Save and export measurements (PDF, CSV), Photos/videos with sound level stamps, Customizable alerts and profiles, Sync with Apple Health

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

**In-app purchases:** none


## Frequently asked questions

### Is dB free?

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

### Is Decibel Pro free?

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

### Which has better reviews, dB or Decibel Pro?

Decibel Pro is rated higher. dB averages 1.0 out of 5 from 1 ratings, while Decibel Pro averages 4.4 from 75 ratings.

### Do dB or Decibel Pro have ads?

Neither dB nor Decibel Pro shows ads.

### Which is updated more often, dB or Decibel Pro?

dB ships an update every 3 weeks, and Decibel Pro every 36 months. Most recently, dB was updated on November 2, 2026 and Decibel Pro on November 8, 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.*