# Spectrolite — Smooth real-time spectrograms

> Real-time sound spectrogram visualization and audio measurement tool. (iPhone/iPad app by Waxing Wave.)

- Source: https://appshunter.io/ios/app/spectrolite/id1480240180 (this page in markdown: same URL + `.md`)
- Developer: [Waxing Wave](https://appshunter.io/developer/392942046)
- Category: Utilities, Music
- Price: Free with in-app purchases
- Rating: 4.80/5 from 51 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 1 MB
- Languages: American English
- Released: 2021-01-14
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/spectrolite/id1480240180/reviews.md

## What is Spectrolite?

Spectrolite visualizes sound as spectrograms in real time.

Spectrolite supports constant-Q spectrograms, which use a logarithmic frequency scale for a display where musical notes are evenly spaced.  Spectrograms based on linear and mel frequency scales are also supported.

The display covers the full frequency range of human hearing.  Intuitive touch panning and zooming lets you dive in and explore the spectrograms in detail.  Gain, Q, and other parameters can be adjusted in real time and instantly apply to the display of past signals as well as future ones.

The Pro in-app purchase adds grids and scales for time, frequency, and amplitude, as well as a spectrum view and a tap-to-measure function. This expands Spectrolite into an audio measurement tool that you can use to measure frequencies, musical pitches, amplitudes, and durations.

## Key features

- Real-time spectrogram visualization
- Constant-Q, linear, and mel frequency scales
- Full human hearing frequency range
- Intuitive touch panning and zooming
- Adjustable gain, Q, and other parameters
- Pro version: grids, scales, spectrum view, tap-to-measure

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro | $4.99 | one-time |


## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/spectrolite/id1480240180/reviews.md

### 4/5 — great, pro features might be nice

*2026-03-20*

would be nice to be able to select color map

### 1/5 — Not very useful to me.

*2025-10-18*

I can’t get it to accept a file input, and it won’t go when I have an audio playing from a background app.

### 5/5 — nice

*2024-11-12*

Its v v useful for voice training or for taking in an audio input into the screen por xeample if i need to encode a raw values into a livn feed i can hook it to a speaker & play it here plus i can more easily see frequencies and their oscillation such as the doppler effect in higher frequencies its very nice <3

### 5/5 — Wait what.

*2024-06-13*

I bought this long ago and just came across it again. I love these experimental type technology apps. Its interesting and im seeing monks in temples and hundreds of ETs ☺️

### 5/5 — This is the real deal

*2023-12-20*

Terrific, accurate and tunable spectrogram. So glad I found this one. Nice use of open source library Gaborator.

### 5/5 — Pretty awesome!!

*2023-04-29*

I love to play with the settings to reveal new colors.

## Frequently asked questions about Spectrolite

### What types of spectrograms does Spectrolite support?

Spectrolite supports constant-Q spectrograms with a logarithmic frequency scale, as well as linear and mel frequency scales. This allows for versatile analysis of audio signals.

### Can I adjust parameters in Spectrolite?

Yes, you can adjust parameters like gain and Q in real time. These adjustments instantly apply to both past and future signal displays, offering dynamic control.

### What features are included in the Pro version of Spectrolite?

The Pro in-app purchase adds grids and scales for time, frequency, and amplitude, a spectrum view, and a tap-to-measure function. This transforms Spectrolite into a comprehensive audio measurement tool.

### What devices is Spectrolite compatible with?

Spectrolite is compatible with iPhone, iPad, and iPod devices. It is designed to provide a rich audio analysis experience across Apple's mobile ecosystem.

### How often is Spectrolite updated?

The last update for Spectrolite was on February 5, 2026, with version 2.3. This indicates a recent update, suggesting ongoing development and support.

### What is the age rating for Spectrolite?

Spectrolite has an age rating of 4+. This indicates it is suitable for a wide audience, including younger users, with no mature content concerns.

### How accurate is Spectrolite for audio measurements?

The Pro version of Spectrolite offers a tap-to-measure function for frequencies, musical pitches, amplitudes, and durations. While specific accuracy metrics aren't detailed, these features are designed for precise audio measurement.

### Does Spectrolite have ads?

Spectrolite does not contain advertisements. The app is free to download and use, with optional in-app purchases for advanced features.

## Version history (last 5 releases)

### 2.3 — 2026-02-05

Fixed a bug that could cause a failure to resume operation after an audio interruption such as an alarm or incoming call.

### 2.2 — 2025-12-11

Fixed a bug that caused an incorrect analysis bandwidth to be used for constant bandwidth and and mel spectra in the spectrum mode.

Improved spectrogram image quality and reduced flicker when zooming out in the vertical direction.

Updated to meet new technical requirements from Apple.

### 2.1 — 2025-02-17

Bug fixes and performance improvements

### 2.0 — 2023-11-15

Added support for constant-bandwidth and mel-scale spectrograms.

Fixed a bug that could cause the colors of scales to fail to update immediately after being changed in the settings.

### 1.4 — 2023-03-17

Fixed a bug that caused the tap-to-measure function of the Pro in-app purchase to display the left channel measurements for both channels when measuring a stereo input.

Performance improvements and documentation updates.

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## More apps by Waxing Wave

- [Retro Tuner](https://appshunter.io/ios/app/retro-tuner/id624598750)
- [AG Anagram](https://appshunter.io/ios/app/ag-anagram/id628449695)
- [Chordopia](https://appshunter.io/ios/app/chordopia/id922029762)

All apps by Waxing Wave: https://appshunter.io/developer/392942046

## Related topics

[wavelet voice sonogram](https://appshunter.io/ios/topics/wavelet-voice-sonogram) · [spectral analysis](https://appshunter.io/ios/topics/spectral-analysis)

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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 2026-08-25.*