# Chord Detector ZAX

> This app is automatic chord detector (chord finder) useing the device microphone

Canonical page: [https://chrome-stats.com/d/com.finestandroid.chorddetector](https://chrome-stats.com/d/com.finestandroid.chorddetector)

## Overview

- **ID:** `com.finestandroid.chorddetector`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Bialamusic
- **Category:** MUSIC\_AND\_AUDIO
- **Downloads:** 178,434
- **Rating:** 2.67 / 5 (540 ratings)
- **Version:** 0.91
- **Last updated:** 2026-02-13
- **First published:** 2013-11-24
- **Publisher country:** DE
- **Size:** 3.20 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.finestandroid.chorddetector)
- **Website:** [http://bialamusic.com/](http://bialamusic.com/)
- **Privacy policy:** [https://bialamusic.com/ppall/](https://bialamusic.com/ppall/)

## Description

Chord Detector ZAX is an innovative Chrome extension that automatically detects major and minor chords using your device's internal microphone. Beyond chord detection, it offers a unique music spectrum feature, allowing users to visually see the notes within any sound, revealing instrument timbre and frequency details.

Key features include chord recognition (major and minor), music spectrum visualization, pitch shift, strongest note detection, bass note identification, and BPM (tempo) detection. Operating within the 70 - 450 Hz range, ZAX is designed to be versatile, suitable for any instrument or audio source. Currently in alpha, the free, fully functional extension serves as both a chord finder and a polyphonic music analyzer, making it ideal for musicians, composers, and audio enthusiasts aiming to understand and analyze music at a deeper level.

## Rankings

- #168,563 — Overall

## 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.finestandroid.chorddetector.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.gms.permission.AD_ID`

## Review summary

Reviews consistently praise real-time chord detection and memory aid for progressions, but note reliability issues: chords read incorrectly, BPM is unreliable, and fast/complex songs confuse the detector. Overall, it’s useful for learning and simple passages, but not dependable for professional use or rapid chord changes.

### Pros

- Real-time chord and note detection via the microphone, useful for musicians and composers.
- Helps reconstruct chord progressions from old recordings and locate root bass notes quickly.
- Effective for simple chords and slower tempos, providing clear feedback for basic progressions.

### Cons

- Inconsistent or incorrect chord detection, with chords reading wrongly or changing unpredictably.
- Unreliable BPM readings, often not accurate or consistent with a metronome or click track.
- Struggles with fast or complex progressions; performance is best on simple, slow passages and deteriorates with speed.

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