# SPL Meter vs Decibel Meter

The clearest difference is ads: SPL Meter at none against Decibel Meter's shown. SPL Meter also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. SPL Meter sells 2 in-app purchases, starting at $1.99 per 7 days and Decibel Meter sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

SPL Meter ships an update every 5 weeks, Decibel Meter every 4 weeks. The most recent releases landed on September 13, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | SPL Meter | Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (9 ratings)](https://appshunter.io/ios/app/spl-meter-dbtracker/id6742470686/reviews)** | — |
| Number of ratings | **9** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 14 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [金红 李](https://appshunter.io/developer/1781133144) | [Nico Schroeder](https://appshunter.io/developer/432790036) |

## What reviewers say

### 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

**In-app purchases (2)**

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


### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-noise-analyzer/id6747433637)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Premium | $4.99 | per month |
| One Week Premium | $5.99 | per 7 days |
| One Year Premium | $19.99 | per year |
| Lifetime Premium | $29.99 | one-time |


## Frequently asked questions

### Is SPL Meter free?

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

### Is Decibel Meter free?

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

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

Decibel Meter shows ads; SPL Meter does not.

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

SPL Meter ships an update every 5 weeks, and Decibel Meter every 4 weeks. Most recently, SPL Meter was updated on September 13, 2026 and Decibel Meter on September 21, 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.*