# Harmonicity Meter

> Measure Harmonic to Noise Ratio (Harmonicity), Jitter & Shimmer.

Canonical page: [https://chrome-stats.com/d/com.keuwl.harmonicitymeter](https://chrome-stats.com/d/com.keuwl.harmonicitymeter)

## Overview

- **ID:** `com.keuwl.harmonicitymeter`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** keuwlsoft
- **Category:** MUSIC\_AND\_AUDIO
- **Downloads:** 107,498
- **Rating:** 4.63 / 5 (432 ratings)
- **Version:** 1.40
- **Last updated:** 2024-01-17
- **First published:** 2014-10-11
- **Size:** 4.04 MB
- **Data as of:** 2025-05-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.keuwl.harmonicitymeter)
- **Website:** [http://www.keuwl.com](http://www.keuwl.com/)
- **Privacy policy:** [https://www.keuwl.com/privacy\_policy/b/013pp3.html](https://www.keuwl.com/privacy_policy/b/013pp3.html)

## Description

Harmonicity Meter is a powerful Chrome extension designed to analyze sound quality by measuring the Harmonic to Noise Ratio (Harmonicity), Jitter, and Shimmer directly from your microphone. It provides insights into the purity of sounds, useful for voice professionals and musicians alike.

The extension auto-detects sound and calculates frequency with a high-resolution FFT spectrum, converting detected frequencies into musical notes for tuning instruments accurately. With features like averaging, pause control, and an intuitive display of sound metrics, it serves as a handy tool for real-time vocal or instrument sound assessment. Note that measurements vary depending on device and microphone placement, and it works best with sustained sounds like vowels or continuous tones. Technical details and methodology are available for those interested in the science behind the metrics.

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.RECORD_AUDIO`
- `android.permission.WAKE_LOCK`
- `com.google.android.gms.permission.AD_ID`
- `com.keuwl.harmonicitymeter.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Users appreciate Harmonicity Meter for its simplicity, accuracy, and smart design. It provides precise single-frequency readings without clutter or excessive options, making it ideal for tuning instruments and sound quality tests. The app is lightweight, ad-free, and intuitive, attributes that users consistently praise. A minor delay in response was occasionally noted, and some advanced users might miss additional features. Overall, it is highly regarded as a hidden gem and a superior alternative to other frequency analyzers.

### Pros

- Simple and easy to use with clear and accurate frequency readings.
- Superior design and navigation compared to similar apps.
- Accurate and reliable frequency detection, useful for musical instrument tuning and sound analysis.
- No ads and lightweight, not draining battery.
- Highly praised by users familiar with the developer's other apps.

### Cons

- Some users noticed a slight delay in the app's response.
- Limited to providing only a single Hz number, which may lack advanced features.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.keuwl.harmonicitymeter)