# Decibel Meter X vs Sound Meter Master

The clearest difference is in-app purchases: Decibel Meter X at none against Sound Meter Master's 5. Decibel Meter X also leads on ads (none vs shown). Sound Meter Master's advantage is iOS requirement (12.0 vs 16.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Sound Meter Master sells 5 in-app purchases, starting at $1.99 per 7 days. Decibel Meter X asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Decibel Meter X | Sound Meter Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (57 ratings)](https://appshunter.io/ios/app/decibel-meter-x/id6478142605/reviews)** | — |
| Number of ratings | **57** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | Every 4 weeks |
| Monetization | Free | — |
| Size | 6 MB | 52 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [永超 侯](https://appshunter.io/developer/906391544) | [Jorge Huertas](https://appshunter.io/developer/1810749286) |

## What reviewers say

### 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


### Sound Meter Master

[App page](https://appshunter.io/ios/app/sound-meter-master/id6745103523)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $1.99 | per 7 days |
| Monthly Premium Access | $3.99 | per month |
| Annual Premium Access | $12.99 | per year |
| Remove Ads Test | $0.99 | one-time |
| Remove Ads | $24.99 | one-time |


## Frequently asked questions

### Is Decibel Meter X free?

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

### Is Sound Meter Master free?

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

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

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

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

Decibel Meter X ships an update every 4 weeks, and Sound Meter Master every 4 weeks. Most recently, Decibel Meter X was updated on November 4, 2026 and Sound Meter Master on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*