Spectral Eye

Name: Spectral Eye
Rating: 4.9 (84 reviews)
Author: Secret Base Design

By: Secret Base Design

Music

Features & Capabilities

Spectral Eye visualizes sound frequencies with a spiral FFT display. Incoming audio is split into individual sine waves and plotted so octaves radiate from the center. The size and color of the dots reflect the relative strength of each frequency, making harmonics and timbre easy to compare at a glance.

The extension also includes a built-in synthesizer (pure sine or sine with a fifth) and MIDI support to trigger notes on external synths. Drag controls to shape tone, tap or drag on the display to adjust pitch, and use Spectral Eye to observe how notes and chords are formed, or to drive compatible MIDI tools like MIDImorphosis and Infinite Looper. Free, ad-free, and designed for learning, exploration, and creative music-making.

User Growth & Download Statistics

App Music & Audio Education Design

By:

Secret Base Design

Rating:

4.90

(84)

Version:

2.0 Last updated: 2017-01-25

Version code:

841415136

Creation date:

2012-08-01

Compatible devices:

Size:

5.08MB

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-14

Compare stats and ranking:

Ranking

# 156,615 ▼ 350

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

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Developed by:

Secret Base Design

Apple Apps Store

https://apps.apple.com/us/app/spectral-eye/id546934084

User Reviews

This is my favorite app of all time. If it goes away I’m gonna pay someone to build a similar app for me.

by ni*****, 2026-04-11

Not for me…

by I *****, 2025-08-20

This app used to be great but now it does not present a choice to use the microphone only when the app is active. You have to turn the mic on in the iPhone Settings Spectral Eye app settings to get it to work. There is no option in the app to only let the app use the mic when the app is open. If you close the app the app still keeps the microphone connected, until you go back to iPhone Settings Spectral Eye app settings to manually turn the microphone off. The multistep process takes all the fun out of it, and the microphone staying on after you close the app seems creepy. Sorry to complain but this app should be pulled from the store if development and updates are dead. Thank you.