# Decibel Meter Pro vs BinaryClockWatch

The clearest difference is in-app purchases: BinaryClockWatch at none against Decibel Meter Pro's 1. BinaryClockWatch also leads on ads (none vs shown) and update cadence (daily vs every 5 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Decibel Meter Pro sells 1 one-off in-app purchase. BinaryClockWatch asks for nothing beyond the download.

Decibel Meter Pro ships an update every 5 days, BinaryClockWatch daily. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Decibel Meter Pro | BinaryClockWatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/decibel-meter-pro-sound-level/id6779537617/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 2 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Alper Sumer Guc](https://appshunter.io/developer/1896672915) | [Christian Koys](https://appshunter.io/developer/1498135043) |

## What reviewers say

### Decibel Meter Pro

[App page](https://appshunter.io/ios/app/decibel-meter-pro-sound-level/id6779537617)

Transform your device into a professional sound level meter. Analyze noise in dB, dBA, and dBC, view frequency spectrums, and understand your safe noise exposure limits. Record, prove, and share measurements with detailed reports and location data.

**Highlights:** Real-time spectrum analyzer, Live spectrogram, Noise dose tracking, Loud-sound alerts, Audio recording and playback, CSV data export, Calibration

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter - Premium | $2.99 | one-time |


### BinaryClockWatch

[App page](https://appshunter.io/ios/app/binaryclockwatch/id6808273520)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter Pro free?

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

### Is BinaryClockWatch free?

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

### Do Decibel Meter Pro or BinaryClockWatch have ads?

Decibel Meter Pro shows ads; BinaryClockWatch does not.

### Which is updated more often, Decibel Meter Pro or BinaryClockWatch?

Decibel Meter Pro ships an update every 5 days, and BinaryClockWatch daily. Most recently, Decibel Meter Pro was updated on November 1, 2026 and BinaryClockWatch on October 29, 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.*