# Decibel Meter vs SonoMeter

Decibel Meter and SonoMeter are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Decibel Meter sells 4 in-app purchases, starting at $3.99 per 7 days and SonoMeter sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Decibel Meter ships an update every 11 months, SonoMeter every 8 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Decibel Meter | SonoMeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (55 ratings)](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1579747105/reviews)** | — |
| Number of ratings | **55** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 8 months** |
| Monetization | Freemium | — |
| Size | 18 MB | 35 MB |
| Requires iOS | **15.0** | 16 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rychard Matskevich](https://appshunter.io/developer/1395390712) | [Raphael Goupille](https://appshunter.io/developer/1650597250) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1579747105)

This tool transforms your iPhone into a professional sound level meter, measuring decibels and analyzing sound frequencies. It helps identify harmful noise levels to protect your hearing and health, offering detailed insights and measurement history.

**Highlights:** Professional sound level meter, Sound frequency analysis, Noise dosimeter with standards, Accurate sound pressure measurements, Save and export measurements, Advanced measurement charts, MIN/MAX/AVG data

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter Premium Weekly | $3.99 | per 7 days |
| Noise Spectrum Detector VIP | $8.99 | per month |
| Noise Frequency Checker VIP | $19.99 | per 3 months |
| Sound Level Analyzer dB VIP | $29.99 | per year |


### SonoMeter

[App page](https://appshunter.io/ios/app/sonometer-decibel-meter/id6745488403)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |
| Monthly subscription | $5.99 | per month |
| Annual subscription | $24.99 | per year |
| Premium Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is Decibel Meter free?

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

### Is SonoMeter free?

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

### Do Decibel Meter or SonoMeter have ads?

Neither Decibel Meter nor SonoMeter shows ads.

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

Decibel Meter ships an update every 11 months, and SonoMeter every 8 months. Most recently, Decibel Meter was updated on October 27, 2026 and SonoMeter on October 25, 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.*