# Live Spectrogram — Realtime audio spectral viewer

> Real-time audio spectral viewer for visualizing sound frequencies over time. (iPhone/iPad app by Krueger Systems, Inc..)

- Source: https://appshunter.io/ios/app/live-spectrogram/id630831185 (this page in markdown: same URL + `.md`)
- Developer: [Krueger Systems, Inc.](https://appshunter.io/developer/299293363)
- Category: Utilities, Music
- Price: $1.99
- Rating: 4.80/5 from 6 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 15 MB
- Released: 2013-04-09
- Data updated: 2026-08-13
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/live-spectrogram/id630831185/reviews.md

## What is Live Spectrogram?

Visualize audio with this handy tool.

It displays the frequencies of sound around you over time. The horizontal axis is time, the vertical is frequency, and the intensity of frequencies is shown using pretty shades of red.

Use it to:

Perfect your singing voice
Analyze the call of animals
Identify and locate annoying sounds around your house
Learn about the world of frequency analysis

I hope you enjoy this handy little tool!

## Key features

- Real-time audio visualization
- Frequency analysis
- Time-based spectrum display
- Intensity shown by color
- Singing voice perfection
- Animal call analysis
- Sound source identification

## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/live-spectrogram/id630831185/reviews.md

### 5/5 — exactly what I needed

*2026-03-20*

useful for identifying frequencies. would be great if there were settings to change bandwidth and export data to CSV

### 5/5 — Very Detailed Sound Data In High Resolution

*2025-11-21*

This app is simple, but really nice. Of course the better your mic is, the better it will work. I’m using an iPhone 16 which has a really good microphone, and it can pick up sound frequencies that I can’t even hear with my ears. It’s neat to see the real time sounds being printed on the spectrogram. I suppose if I were to want additional features, it would be the ability to record, and also maybe see a history of one minute or two of past sounds. Other than that, I love it and I feel it was worth $2.

### 4/5 — pretty good

*2024-10-29*

it would be nice if i could zoom in more, but still does all i need well enough.

### 2/5 — Naja…

*2024-07-15*

Die Anzeige besteht oft nur aus flimmernden Glitches und ist daher nicht wirklich brauchbar. Außerdem verursacht sie sehr viel CPU-Last, sodass sie nur kurz benutzt werden sollte. Alles in allem gibt es bessere Apps für diese Analysen. 
Zum Glück war der Kaufpreis nicht so hoch…

### 1/5 — Broken! (Frequency bands are not displayed)

*2017-07-08*

This is a very simple app showing a spectrograph, but the frequency bands displayed in the y-axis just show up as boxes with no labels.

**Developer response:** Hello, I have updated the app and hope you'll take another look

### 4/5 — Needs just 1 thing

*2015-12-19*

Please add a save feature. Works perfect but there have been times where I have needed to compare sound levels I can't because if I close the app it erases everything.

### 5/5 — Love it

*2015-07-27*

EASILY one of the best Spectrogram apps of 2015

### 3/5 — good, needs an options menu

*2013-06-14*

pinch-zooming is very useful for pinpointing mid frequencies,though update response is choppy and I would have liked some options to change window size. there also needs to be a switch for logarithmic frequency scaling - linear display is only useful in a handful of situations. all and all a good design that just needs a bit of user customization

## Frequently asked questions about Live Spectrogram

### What is Live Spectrogram used for?

Live Spectrogram visualizes audio frequencies in real-time. Users can employ it to perfect their singing, analyze animal vocalizations, or identify and locate bothersome sounds in their environment.

### How does Live Spectrogram display audio?

The app displays sound frequencies over time. The horizontal axis represents time, the vertical axis represents frequency, and the intensity of each frequency is shown using shades of red.

### What devices does Live Spectrogram support?

Live Spectrogram is available for iPhone, iPad, and iPod devices.

### What is the age rating for Live Spectrogram?

Live Spectrogram has an age rating of 4+.

### How much does Live Spectrogram cost?

Live Spectrogram is a paid application priced at $1.99.

### When was Live Spectrogram last updated?

The latest version of Live Spectrogram was last updated on March 10, 2025.

### Does Live Spectrogram have ads?

No, Live Spectrogram does not contain advertisements.

### What is the user sentiment for Live Spectrogram based on ratings?

Live Spectrogram has received very positive user feedback, indicated by its high rating of 4.8 stars from 4 ratings.

## Version history (last 5 releases)

### 1.3 — 2025-03-10

Updated for iOS 18

### 1.2 — 2020-09-03

Added a logarithmic scale option

### 1.1 — 2017-10-17

* Updated for iOS 11
* Higher sampling rate

### 1.0.1 — 2015-07-21

Updated for iPhone 6 and 6 plus

### 1.0 — 2013-04-09

No release notes.

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## More apps by Krueger Systems, Inc.

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All apps by Krueger Systems, Inc.: https://appshunter.io/developer/299293363

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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 2026-08-13.*