# Decibel：Sound Meter vs Decibel Meter Noise Detector

The clearest difference is rating: Decibel：Sound Meter at 3.8 against Decibel Meter Noise Detector's 3.0. Decibel：Sound Meter also leads on update cadence (every 11 days vs every 5 weeks) and ratings volume (6 vs 2). Decibel Meter Noise Detector's advantage is ads (none vs shown). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Decibel：Sound Meter sells 3 in-app purchases, starting at $3.99 per 7 days and Decibel Meter Noise Detector sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Decibel：Sound Meter holds the better App Store score, 3.8 against 3.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

Decibel：Sound Meter ships an update every 11 days, Decibel Meter Noise Detector every 5 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Decibel：Sound Meter | Decibel Meter Noise Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (6 ratings)](https://appshunter.io/ios/app/decibelsound-meter/id6473146362/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/decibel-meter-noise-detector/id6745646643/reviews) |
| Number of ratings | **6** | 2 |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 33 MB | 36 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [ZHHUALIUON INC](https://appshunter.io/developer/1686696259) | [Shenzhen MC Jisu Technology Co., Ltd.](https://appshunter.io/developer/1808919688) |

## What reviewers say

### Decibel：Sound Meter

[App page](https://appshunter.io/ios/app/decibelsound-meter/id6473146362)

This application offers real-time decibel measurements with high precision. It provides detailed reports, location data, and the ability to share or export audio measurements. Users can also utilize a real-time decibel camera feature.

**Highlights:** Real-time decibel measurement, High precision, Location data, Decibel camera, Measurement reports, Data sharing, Audio data export

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly membership | $3.99 | per 7 days |
| Monthly membership | $4.99 | per month |
| Annual membership | $14.99 | per year |


### Decibel Meter Noise Detector

[App page](https://appshunter.io/ios/app/decibel-meter-noise-detector/id6745646643)

This tool measures ambient noise levels in decibels (dB) in real-time. It allows users to record audio, capture photos with decibel data, and view historical noise level changes. Reports can be generated and exported for reference.

**Highlights:** Real-time decibel detection, Audio recording with peak decibel marking, Multimedia evidence collection with watermarks, Real-time chart display of noise changes, Historical decibel record viewing, Data detection report export

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Member | $4.99 | per 7 days |
| One year membership | $45.00 | per year |
| Life member | $19.99 | one-time |


## Frequently asked questions

### Is Decibel：Sound Meter free?

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

### Is Decibel Meter Noise Detector free?

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

### Which has better reviews, Decibel：Sound Meter or Decibel Meter Noise Detector?

Decibel：Sound Meter is rated higher. Decibel：Sound Meter averages 3.8 out of 5 from 6 ratings, while Decibel Meter Noise Detector averages 3.0 from 2 ratings.

### Do Decibel：Sound Meter or Decibel Meter Noise Detector have ads?

Decibel：Sound Meter shows ads; Decibel Meter Noise Detector does not.

### Which is updated more often, Decibel：Sound Meter or Decibel Meter Noise Detector?

Decibel：Sound Meter ships an update every 11 days, and Decibel Meter Noise Detector every 5 weeks. Most recently, Decibel：Sound Meter was updated on October 30, 2026 and Decibel Meter Noise Detector on October 24, 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.*