# Decibel Meter X vs SPL Meter

The clearest difference is in-app purchases: Decibel Meter X at none against SPL Meter's 2. Decibel Meter X also leads on rating (4.8 vs 4.5) and ratings volume (49 vs 11). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SPL Meter sells 2 in-app purchases, starting at $1.99 per 7 days. Decibel Meter X asks for nothing beyond the download.

Decibel Meter X holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 49 and 11 respectively.

Decibel Meter X ships an update every 4 weeks, SPL Meter every 5 weeks. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Decibel Meter X | SPL Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (49 ratings)](https://appshunter.io/ios/app/decibel-meter-x/id6478142605/reviews)** | [4.5 (11 ratings)](https://appshunter.io/ios/app/spl-meter-dbtracker/id6742470686/reviews) |
| Number of ratings | **49** | 11 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 9 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [永超 侯](https://appshunter.io/developer/906391544) | [金红 李](https://appshunter.io/developer/1781133144) |

## 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


### SPL Meter

[App page](https://appshunter.io/ios/app/spl-meter-dbtracker/id6742470686)

This tool measures ambient noise levels in real-time, providing decibel readings to help you understand noise intensity and protect your hearing. It features an intuitive gauge, explanations of noise levels, and recording capabilities to track variations across locations and times.

**Highlights:** Real-time decibel measurement, Intuitive gauge display, Noise level explanations, Recording functionality, Track noise variations, Hearing protection guidance

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $1.99 | per 7 days |
| Unlimited access | $9.99 | per year |


## Frequently asked questions

### Is Decibel Meter X free?

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

### Is SPL Meter free?

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

### Which has better reviews, Decibel Meter X or SPL Meter?

Decibel Meter X is rated higher. Decibel Meter X averages 4.8 out of 5 from 49 ratings, while SPL Meter averages 4.5 from 11 ratings.

### Do Decibel Meter X or SPL Meter have ads?

Neither Decibel Meter X nor SPL Meter shows ads.

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

Decibel Meter X ships an update every 4 weeks, and SPL Meter every 5 weeks. Most recently, Decibel Meter X was updated on October 15, 2026 and SPL Meter on October 11, 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.*