# Decibel：Sound Meter vs Decibel Meter X

The clearest difference is rating: Decibel Meter X at 4.7 against Decibel：Sound Meter's 3.8. Decibel Meter X also leads on in-app purchases (none vs 3) and ads (none vs shown). Decibel：Sound Meter's advantage is update cadence (every 11 days vs every 4 weeks) and iOS requirement (13.0 vs 16.0). On price 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. Decibel Meter X asks for nothing beyond the download.

Decibel Meter X holds the better App Store score, 4.7 against 3.8. That said, the two scores are not equally well evidenced: Decibel Meter X has 56 ratings behind it against 6, so its average is the more settled of the two.

Decibel：Sound Meter ships an update every 11 days, Decibel Meter X every 4 weeks. Both last shipped on October 27, 2026.

## The numbers

| Metric | Decibel：Sound Meter | Decibel Meter X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (6 ratings)](https://appshunter.io/ios/app/decibelsound-meter/id6473146362/reviews) | **[4.7 (56 ratings)](https://appshunter.io/ios/app/decibel-meter-x/id6478142605/reviews)** |
| Number of ratings | 6 | **56** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 4 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 33 MB | 6 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [ZHHUALIUON INC](https://appshunter.io/developer/1686696259) | [永超 侯](https://appshunter.io/developer/906391544) |

## 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 X

[App page](https://appshunter.io/ios/app/decibel-meter-x/id6478142605)

This application precisely measures sound levels and analyzes audio spectrums. It can also generate specific frequency sounds for testing, research, or therapeutic purposes. Its intuitive interface makes sound exploration accessible to all users.

**Highlights:** Precise decibel level measurement, Audio spectrum analysis, Spectrogram display, Generate specific frequency sounds, Intuitive user interface, Detailed usage instructions

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel：Sound Meter free?

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

### Is Decibel Meter X free?

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

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

Decibel Meter X is rated higher. Decibel：Sound Meter averages 3.8 out of 5 from 6 ratings, while Decibel Meter X averages 4.7 from 56 ratings.

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

Decibel：Sound Meter shows ads; Decibel Meter X does not.

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

Decibel：Sound Meter ships an update every 11 days, and Decibel Meter X every 4 weeks. Most recently, Decibel：Sound Meter was updated on October 27, 2026 and Decibel Meter X on October 27, 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.*