# SoundMeter X vs Decibel Meter A+

The clearest difference is review sentiment: Decibel Meter A+ at 89% against SoundMeter X's 23%. Decibel Meter A+ also leads on iOS requirement (15.0 vs 18.6). SoundMeter X's advantage is ads (none vs shown). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. SoundMeter X sells 7 in-app purchases, starting at $4.99 per month and Decibel Meter A+ sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

SoundMeter X ships an update every 3 weeks, Decibel Meter A+ every 6 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SoundMeter X | Decibel Meter A+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (45 ratings)](https://appshunter.io/ios/app/soundmeter-x/id1348050232/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 22.6% of reviews | **89.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 18 MB | 5 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Faber Acoustical, LLC](https://appshunter.io/developer/284781780) | [BO YOUNG PARK](https://appshunter.io/developer/1291813217) |

## What reviewers say

### SoundMeter X

[App page](https://appshunter.io/ios/app/soundmeter-x/id1348050232)

Transform your device into a professional sound level meter, noise dosimeter, and spectrum analyzer. Log data, calibrate sensitivity, and analyze audio with advanced features. Offers a free trial for premium functionalities.

**Highlights:** Handheld data-logging sound level meter, Data-logging noise dosimeter, Real-time octave spectrum analyzer, Multi-channel data recorder, Stereo signal generator, Sensitivity calibration, Data logging in CSV, TXT, MAT, and PDF

**Features:** Family Sharing, Apple Watch app

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SoundMeter Pro, 1 Month | $4.99 | per month |
| Pro Tool Set, 1 Month | $24.99 | per month |
| SoundMeter Pro, 1 Year | $49.99 | per year |
| Pro Tool Set, 1 Year | $249.99 | per year |
| 14-day Free Trial, SoundMeter Pro | Free | one-time |
| SoundMeter Pro 2026 Upgrade | $29.99 | one-time |
| SoundMeter Pro 2026 | $99.99 | one-time |


### Decibel Meter A+

[App page](https://appshunter.io/ios/app/decibel-meter-a-plus/id6450104699)

This app measures and analyzes environmental noise in real time, providing accurate dB levels and statistical data. It features a simple interface for detecting subtle noises, with recording and sharing capabilities to manage noise data effectively and promote a safer environment.

**Highlights:** Real-time dB level monitoring, Environmental noise analysis, Noise measurement recording, Data sharing capabilities, Intuitive user interface, Statistical data generation

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Coffee for App Developers | $1.99 | one-time |
| Coffee + Cake for App Devs | $3.99 | one-time |


## Frequently asked questions

### Is SoundMeter X free?

SoundMeter X is free to download, with in-app purchases available.

### Is Decibel Meter A+ free?

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

### Do SoundMeter X or Decibel Meter A+ have ads?

Decibel Meter A+ shows ads; SoundMeter X does not.

### Which is updated more often, SoundMeter X or Decibel Meter A+?

SoundMeter X ships an update every 3 weeks, and Decibel Meter A+ every 6 weeks. Most recently, SoundMeter X was updated on October 21, 2026 and Decibel Meter A+ 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.*