# Decibel Meter A+ vs Decibel Meter X

The clearest difference is in-app purchases: Decibel Meter X at none against Decibel Meter A+'s 3. Decibel Meter X also leads on ads (none vs shown) and review sentiment (100% vs 89%). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Decibel Meter A+ sells 3 one-off in-app purchases. Decibel Meter X asks for nothing beyond the download.

Decibel Meter A+ ships an update every 6 weeks, Decibel Meter X every 4 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Decibel Meter A+ | Decibel Meter X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (57 ratings)](https://appshunter.io/ios/app/decibel-meter-x/id6478142605/reviews)** |
| Number of ratings | — | **57** |
| Positive reviews | 89.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 4 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 6 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BO YOUNG PARK](https://appshunter.io/developer/1291813217) | [永超 侯](https://appshunter.io/developer/906391544) |

## What reviewers say

### 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 |


### 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 Meter A+ free?

Decibel Meter A+ 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.

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

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

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

Decibel Meter A+ ships an update every 6 weeks, and Decibel Meter X every 4 weeks. Most recently, Decibel Meter A+ was updated on November 3, 2026 and Decibel Meter X on November 4, 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.*