# Decibel Meter vs Decibel：Sound Meter

The clearest difference is rating: Decibel Meter at 4.3 against Decibel：Sound Meter's 3.8. Decibel Meter also leads on ratings volume (907 vs 6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Decibel Meter sells 8 in-app purchases, starting at $1.99 per 7 days and Decibel：Sound Meter sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Decibel Meter holds the better App Store score, 4.3 against 3.8. That said, the two scores are not equally well evidenced: Decibel Meter has 907 ratings behind it against 6, so its average is the more settled of the two.

Decibel Meter ships an update every 2 weeks, Decibel：Sound Meter every 11 days. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Decibel Meter | Decibel：Sound Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (907 ratings)](https://appshunter.io/ios/app/decibel-meter-measure-db-level/id1274038012/reviews)** | [3.8 (6 ratings)](https://appshunter.io/ios/app/decibelsound-meter/id6473146362/reviews) |
| Number of ratings | **907** | 6 |
| Positive reviews | 56.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 107 MB | 33 MB |
| Requires iOS | 13 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [文波 曾](https://appshunter.io/developer/1557199654) | [ZHHUALIUON INC](https://appshunter.io/developer/1686696259) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-measure-db-level/id1274038012)

Transform your phone into a professional-grade decibel meter for real-time noise detection. Features advanced algorithms, noise visualization, and recording capabilities for comprehensive sound analysis.

**Highlights:** Military-grade algorithm, Professional GB weighted detection, Noise recording, Noise classification system, AI ambient noise visualization, Noise dosimeter

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Free trail then subscribe | $1.99 | per 7 days |
| 分贝测试仪专业版 | $2.99 | per 3 months |
| 分贝仪专业版 | $2.99 | per 7 days |
| 分贝测试仪专业版 | $4.49 | per 6 months |
| Pro Monthly Subscription | $5.49 | per month |
| 分贝测试仪专业版 | $25.99 | per year |
| Remove advertisement | $0.99 | one-time |
| 终身尊享权益 | $29.99 | one-time |

**What reviewers like**

- 👍 Accurate decibel measurements
- 🚀 Easy to use
- 💡 Useful for various applications (e.g. restaurants, heating systems)
- 🚀 Free version works great

**What reviewers complain about**

- 🐛 Inaccurate readings at higher decibel levels
- 🔒 Requires location access for no apparent reason
- 🔒 Excessive ads and subscription model
- 🐛 Compatibility issues (e.g. no iPad support, Chinese EULA)

**Reported bugs**

- Decibel readings capped at 90 dB
- Displaying incorrect address information
- Crashing or freezing on launch
- Showing 70 dB in a completely silent room

**Requested features**

- Landscape mode for iPad
- Ability to detect sounds above 90 dB
- Option to disable ads or switch to a paid version


### 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 |


## Frequently asked questions

### Is Decibel Meter free?

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

### Is Decibel：Sound Meter free?

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

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

Decibel Meter is rated higher. Decibel Meter averages 4.3 out of 5 from 907 ratings, while Decibel：Sound Meter averages 3.8 from 6 ratings.

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

Both Decibel Meter and Decibel：Sound Meter show ads.

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

Decibel Meter ships an update every 2 weeks, and Decibel：Sound Meter every 11 days. Most recently, Decibel Meter was updated on November 6, 2026 and Decibel：Sound Meter 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.*