# Decibel Sir vs dB Meter

The clearest difference is price: Decibel Sir at Free against dB Meter's $12.99. Decibel Sir also leads on iOS requirement (8.0 vs 17.0). dB Meter's advantage is update cadence (monthly vs every 33 months). On ads, in-app purchases and device support there is nothing between them.

Decibel Sir is free to download; dB Meter costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Decibel Sir ships an update every 33 months, dB Meter monthly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Decibel Sir | dB Meter |
| --- | --- | --- |
| Price | **Free** | $12.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Monthly** |
| Size | 13 MB | 6 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [WonderfulCode](https://appshunter.io/developer/545115773) | [Birkan Aksoy](https://appshunter.io/developer/1626910993) |

## What reviewers say

### Decibel Sir

[App page](https://appshunter.io/ios/app/decibel-sir/id935608173)

**Features:** macOS Compatibility

**In-app purchases:** none


### dB Meter

[App page](https://appshunter.io/ios/app/db-meter-sound-level/id6784445985)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Sir free?

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

### Is dB Meter free?

dB Meter costs $12.99, with no in-app purchases.

### Do Decibel Sir or dB Meter have ads?

Neither Decibel Sir nor dB Meter shows ads.

### Which is updated more often, Decibel Sir or dB Meter?

Decibel Sir ships an update every 33 months, and dB Meter monthly. Most recently, Decibel Sir was updated on November 6, 2026 and dB Meter on October 31, 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.*