# Spectrum Analyzer - Audio FFT — Real-time spectrum analyzer

> Real-time spectrum analyzer (iPhone/iPad app by Josef Dave Llorente.)

- Source: https://appshunter.io/ios/app/spectrum-analyzer-audio-fft/id6803405667 (this page in markdown: same URL + `.md`)
- Developer: [Josef Dave Llorente](https://appshunter.io/developer/6803405669)
- Category: Utilities, Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 1 MB
- Languages: American English
- Released: 2026-08-25
- Data updated: 2026-09-11
- User reviews in markdown: https://appshunter.io/ios/app/spectrum-analyzer-audio-fft/id6803405667/reviews.md

## What is Spectrum Analyzer?

Spectrum Analyzer – Audio FFT transforms your iPhone microphone into a real-time live audio spectrum workspace from 20 Hz to 20 kHz. Using Fast Fourier Transform (FFT) processing, it displays a log-scale frequency graph, live input sound meter, and a peak-frequency readout to pinpoint dominant tones. Easily freeze the display to inspect static audio data. Ideal for musicians, engineers, and students, core features are free, with an optional one-time Pro upgrade for higher FFT resolution.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Spectrum Analyzer - Audio FFT | $1.99 | one-time |



## Version history (last 2 releases)

### 1.1.0 — 2026-08-26

What's New in This Version

• Clearer Help tips and #FF3131 accent styling
• Requires iOS 17.6 or later
• iPhone and iPad only (Mac and Apple Vision support removed)

### 1.0.0 — 2026-08-25

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-11.*