# Audio Spectrum Analyzer

> Utilities

Canonical page: [https://chrome-stats.com/d/id373620982](https://chrome-stats.com/d/id373620982)

## Overview

- **ID:** `id373620982`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Black Cat Systems
- **Category:** Utilities
- **Rating:** 3.90 / 5 (52 ratings)
- **Version:** 1.5
- **Last updated:** 2017-04-26
- **First published:** 2010-06-10
- **Size:** 1.19 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/audio-spectrum-analyzer/id373620982)
- **Website:** [http://www.blackcatsystems.com/ipad-iphone-ipod-touch-audio-sound-app/Audio-Spectrum-Analyzer-FFT-fourier-frequency-dB-dBm-harmonics-acoustic-phase-total-harmonic-distortion-noise.html](http://www.blackcatsystems.com/ipad-iphone-ipod-touch-audio-sound-app/Audio-Spectrum-Analyzer-FFT-fourier-frequency-dB-dBm-harmonics-acoustic-phase-total-harmonic-distortion-noise.html)

## Description

Audio Spectrum Analyzer transforms your browser into a real-time spectrum analyzer. It supports adjustable frequency spans and FFT sizes from 1024 to 262,144 bins, a full 10 Hz–20 kHz range with a logarithmic display, up to five frequency markers, and optional smoothing via averaging. Peak Hold helps visualize transients with configurable decay.

Enhance analysis with visual options and exports: toggle graph fill, adjust brightness for spectrum and grid overlay, choose from multiple window functions (Rectangular, Hanning, Hamming, Tukey, Cosine, Lanczos, Blackman), and capture screenshots for later reference.

## Rankings

- #183,534 — Overall

## Review summary

Overall, users find Audio Spectrum Analyzer useful and easy to use for basic audio analysis and FFT learning. Pros repeatedly cited include an intuitive interface, practical analysis capabilities, affordable price, and accurate peak detection at times. However, multiple reviews flag slow updates and responsiveness, occasional bugs with zoom and display, and mixed views on value versus free apps. Common requests include freeze/snapshot/export, manual peak markers, and improved zoom control. In short: solid beginner/tool with feature gaps and performance reliability issues.

### Pros

- Easy to use / intuitive interface
- Useful and versatile tool for audio analysis / FFT
- Affordable / good value
- Accurate peak markers / frequency detection (e.g., testing with known tones)

### Cons

- Slow update rate / slow sampling
- Bugs and reliability issues (zoom failures, resume/display glitches)
- Value concerns: overpriced / not worth paying
- Missing features like freeze/snapshot/export and improved zoom/marker controls

## Similar extensions and apps

- [Spectrum-V: Audio analyzer](https://chrome-stats.com/d/id6450556284)
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- [BMA Spectrum Analyzer](https://chrome-stats.com/d/id6763421833)
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- [MintFFT](https://chrome-stats.com/d/id6755054786) — 4.70 / 5
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Source: [Chrome-Stats](https://chrome-stats.com/d/id373620982)