# Audio Spectrum Viewer — Audio Frequency Analysis Tool

> Real-time audio frequency analysis tool with waterfall spectrogram display. (iPhone/iPad app by Steve Glenner.)

- Source: https://appshunter.io/ios/app/audio-spectrum-viewer/id1525023447 (this page in markdown: same URL + `.md`)
- Developer: [Steve Glenner](https://appshunter.io/developer/1518671062)
- Category: Utilities, Music
- Price: $0.99
- Rating: 4.30/5 from 4 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.6 · 2 MB
- Languages: American English
- Released: 2020-07-27
- Data updated: 2026-08-14
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/audio-spectrum-viewer/id1525023447/reviews.md

## What is Audio Spectrum Viewer?

Audio Spectrum Viewer is an easy to use app which will show the frequency content of your live audio environment in an easy to understand waterfall / spectrogram. This tool can be used to analyze the performance of speakers and sound systems, and to create audio fingerprint images of environmental sounds such as bird songs and other animal sounds. Audio Spectrum Viewer is a powerful tool with user-selectable gain, sample rate and other parameters to optimize for a particular setting. Spectrograms can be saved to the camera roll with a timestamped and customizable caption and the audio clips can be saved for later playback. Audio can be captured in the background so you can simultaneously take photos of birds while analyzing their sounds.

## Key features

- Live audio frequency visualization
- Waterfall/spectrogram display
- Speaker and sound system analysis
- Environmental sound fingerprinting
- User-selectable gain and sample rate
- Save spectrograms with captions
- Save audio clips for playback

## Chart rankings

- #190 in Top Paid · Utilities (US App Store)

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/audio-spectrum-viewer/id1525023447/reviews.md

### 2/5 — Inaccurate

*2023-05-08*

Poor frequency resolution. No way to adjust frequent scaling. No numerical scales on frequency or time axes. Noise reduction filters everything, including monotones.

**Developer response:** Thank you for your feedback. There is an update available with several improvements including frequency scales, improved frequency resolution, alternative noise reduction mode (LF cut) and other improvements.

### 5/5 — Great app

*2021-08-28*

I used it to try out different whistle pitches. Works great.

## Frequently asked questions about Audio Spectrum Viewer

### What is Audio Spectrum Viewer used for?

Audio Spectrum Viewer displays the frequency content of your live audio environment in a waterfall spectrogram. It can be used to analyze sound systems and create audio fingerprints of environmental sounds.

### Can Audio Spectrum Viewer capture audio in the background?

Yes, Audio Spectrum Viewer allows for background audio capture. This enables users to simultaneously take photos of birds while analyzing their sounds.

### How much does Audio Spectrum Viewer cost?

Audio Spectrum Viewer is a paid app, priced at $0.99. There are no in-app purchases or advertisements.

### What devices does Audio Spectrum Viewer support?

Audio Spectrum Viewer is supported on iPhone and iPod devices. It is rated for ages 4 and up.

### Can I save the audio analysis from Audio Spectrum Viewer?

Yes, spectrograms can be saved to your camera roll with a timestamped and customizable caption. Audio clips can also be saved for later playback.

### How often is Audio Spectrum Viewer updated?

Audio Spectrum Viewer was last updated on July 27, 2020, with version 1.0. The initial release date was also July 27, 2020.

### Does Audio Spectrum Viewer have ads?

No, Audio Spectrum Viewer is ad-free. The app is a one-time purchase with no advertisements or in-app purchases.

### What parameters can be adjusted in Audio Spectrum Viewer?

Audio Spectrum Viewer is a powerful tool that allows for user-selectable gain, sample rate, and other parameters. These can be optimized for a particular setting.

## Version history (last 2 releases)

### 2.12 — 2026-06-15

Version 2.12
Improved Performance
Increased Frequency Resolution
FFT Window Function
Frequency Scale
Peak Limiter
Low Frequency Cut

### 1.0 — 2020-07-27

No release notes.

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## More apps by Steve Glenner

- [SlipStick](https://appshunter.io/ios/app/slipstick/id1523544516)
- [Thoughts and Prayers Network](https://appshunter.io/ios/app/thoughts-and-prayers-network/id1526398466)
- [Rosemont Audio Recorder](https://appshunter.io/ios/app/rosemont-audio-recorder/id6779098382)

All apps by Steve Glenner: https://appshunter.io/developer/1518671062

## Related topics

[audio spectrum viewer](https://appshunter.io/ios/topics/audio-spectrum-viewer)

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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 2026-08-14.*