# Sound Frequency Analyzer

> Real-time audio spectrum analyzer with FFT, note detection & hum finder

Canonical page: [https://chrome-stats.com/d/com.tooltoolnam.sound\_frequency\_analyzer](https://chrome-stats.com/d/com.tooltoolnam.sound_frequency_analyzer)

## Overview

- **ID:** `com.tooltoolnam.sound_frequency_analyzer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** ToolToolNam
- **Category:** TOOLS
- **Downloads:** 739
- **Version:** 1.0.4
- **Last updated:** 2026-08-27
- **First published:** 2026-07-16
- **Publisher country:** KR
- **Size:** 20 MB
- **Data as of:** 2026-09-09
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.tooltoolnam.sound_frequency_analyzer)
- **Website:** [https://tooltoolnam.github.io/](https://tooltoolnam.github.io/)
- **Privacy policy:** [https://tooltoolnam.github.io/tooltoolnam-privacy/privacy-policy.html](https://tooltoolnam.github.io/tooltoolnam-privacy/privacy-policy.html)

## Description

Turn your phone into a real-time audio spectrum analyzer. Sound Frequency Analyzer captures live sound through your microphone, runs a fast Fourier transform (FFT), and shows the full frequency spectrum right in front of you — Hz across the bottom, dB up the side.<br><br>The dominant frequency is displayed in big, easy-to-read numbers, with the nearest musical note shown next to it (for example, 440 Hz ≈ A4). Great as a quick tuning reference or for seeing exactly what a sound is made of.<br><br>KEY FEATURES<br>▸ Live frequency spectrum (Hz vs dB), updated in real time<br>▸ Dominant frequency shown in large digits<br>▸ Nearest musical note (A4, C#5, and more) in standard notation<br>▸ Peak hold to freeze the highest points<br>▸ Freeze / resume to study a moment in detail<br>▸ Frequency band guides and 50/60 Hz hum reference lines<br>▸ Clean, distraction-free interface<br><br>WHO IT&#39;S FOR<br>▸ Audio engineers and mixing engineers checking the spectrum<br>▸ Music producers analyzing tones and harmonics<br>▸ Musicians looking for a fast tuning reference<br>▸ Anyone diagnosing noise or electrical hum — quickly find power hum at 50 Hz or 60 Hz<br>▸ Teachers and students exploring sound and acoustics<br>▸ Audio demos and experiments<br><br>PRIVATE BY DESIGN<br>Everything runs on your device. No audio is recorded or saved, and no internet connection is required.<br><br>IMPORTANT — ACCURACY NOTE<br>A phone microphone has a limited frequency response. Very low and very high frequencies are captured less accurately, and absolute dB levels are not calibrated. This app is a practical measurement and diagnostic tool for everyday use — it is not a substitute for professional laboratory equipment.<br><br>Free to use, supported by ads.

## Rankings

- #1,246,832 — 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.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.tooltoolnam.sound_frequency_analyzer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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