# Live Spectrum Analyzer — Waveform FFT Sonogram

> Waveform FFT Sonogram (iPhone/iPad app by 成勇 龚.)

- Source: https://appshunter.io/ios/app/live-spectrum-analyzer/id6804594590 (this page in markdown: same URL + `.md`)
- Developer: [成勇 龚](https://appshunter.io/developer/1896721279)
- Category: Utilities, Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.6 · 8 MB
- Languages: American English, Arabic, Bangla, Catalan, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 21 more
- Released: 2026-09-04
- Data updated: 2026-09-09
- User reviews in markdown: https://appshunter.io/ios/app/live-spectrum-analyzer/id6804594590/reviews.md

## What is Live Spectrum Analyzer?

Live Spectrum Analyzer is a real-time audio visualization tool for musicians, students, teachers, sound makers, and anyone who wants to see sound clearly. Use the microphone for live input, or import an audio file from Files to inspect how frequency, amplitude, pitch, and dynamics change over time.

Switch between waveform, FFT, sonogram, spectrum bars, VU meter, pitch, octave bands, peak hold, envelope, waterfall, phase, Lissajous, and XY Scope views. Each mode is designed for quick visual reading while you listen, tune, practice, demonstrate acoustics, compare sounds, or check a recording.

The app also provides practical analysis readouts, including RMS, peak level, decibels, detected pitch, strongest frequency peaks, spectral centroid, zero crossing rate, dynamic range, estimated BPM, beat strength, mel bands, chroma, noise floor, and clipping status. Results are intended as helpful visual references rather than certified measurement data.

Key features:

• Live microphone waveform and spectrum visualization

• Import audio files for playback and local visual analysis

• Waveform, FFT, sonogram, bars, VU, pitch, waterfall, phase, and scope modes

• Adjustable gain, time window, FFT floor, sonogram brightness, contrast, and speed

• Pitch reference, tolerance, microphone gain, and noise gate settings

• Record audio locally, review saved recordings, and share or delete files

• Capture visualization snapshots as PNG images

• Local-first workflow with no account required

Subscription and purchase information:

The app offers a free experience and optional Pro access. Actual prices, trials, promotions, and availability are shown in the App Store.

Privacy and data information:

Your microphone input, imported audio, recordings, snapshots, and analysis results stay on your device by default. The app does not require an account and does not upload your media to a server operated by us.

Privacy Policy: https://sites.google.com/view/livespectrumanalyzer/home/privacypolicy

Terms of Use: https://sites.google.com/view/livespectrumanalyzer/home/term_of_use

Contact: gongchengyong70@gmail.com

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Live Spectrum Analyzer Monthly PRO | $1.99 | per month |
| Live Spectrum Analyzer Yearly PRO | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Live Spectrum Analyzer Life PRO | $19.99 | one-time |



## Version history (last 1 release)

### 1.0.0 — 2026-09-04

No release notes.

## More apps by 成勇 龚

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- [Ukulele Chord Library](https://appshunter.io/ios/app/ukulele-chord-library/id6782726674)
- [Chord Transcriber](https://appshunter.io/ios/app/chord-transcriber/id6786585840)
- [Spleeter Audio Stems](https://appshunter.io/ios/app/spleeter-audio-stems/id6786592290)
- [Guitar Fretboard Chords](https://appshunter.io/ios/app/guitar-fretboard-chords/id6788295009)

All apps by 成勇 龚: https://appshunter.io/developer/1896721279

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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 2026-09-09.*