Audio Spectrum Analyzer

Name: Audio Spectrum Analyzer
Price: 3.99 USD
Rating: 3.9 (52 reviews)
Author: Black Cat Systems

By: Black Cat Systems App

Utilities

Overview

Version:

1.5

Last updated: 2017-04-26

Ranking

#182,666 ▼ 152

Overall

Features & Capabilities

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.

User Growth & Download Statistics

App Music & Audio Developer Tools

By:

Black Cat Systems

Rating:

3.90

(52)

Version:

1.5 Last updated: 2017-04-26

Version code:

841387508

Creation date:

2010-06-10

Compatible devices:

Size:

1.19MB

Price:

3.99

URLs:

Website

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-08-09

Compare stats and ranking:

Ranking

# 182,666 ▼ 152

For Developers

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Contact the developer

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Developed by:

Black Cat Systems

Apple Apps 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

User Reviews

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

Recent reviews

Very useful, but it would be so much better if it could do a running average of the spectrums. This would help to pull signals out of the noise floor.