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HarmonEye free download for Mac


Version 1.4

Sound visualizer software (beta).

Absolutely Free

HarmonEye overview

HarmonEye allows you to see what you hear. What looks like a retina of an eye is a unique software application that listens to the music and shows you the tones and chords being played. From any audio. In real-time. From that, you can easily see the melody, chords and the key of your favorite songs. Including the nuances like a singer’s vibrato. You can write it down, or just look at it for hours and be amazed by your new absolute pitch.

  • Visualizes the tones from the music in a circle
  • Tones from all octaves are aggregated into a single one
  • Each tone bin is yet divided to see vibrato, slides, etc.
  • Switch to the circle of fifths (e.g., to see modulations between keys)
  • Switch to the accumulation mode to average the tones over time
  • Pause!
  • Works in real-time
  • Takes music from the default audio input (e.g., microphone, line-in)
  • With the Soundflower driver, route system audio output and listen to iTunes, YouTube, anything

Note: While the software is classified as free, it is actually donationware. Please consider making a donation to help support development.

What’s new in version 1.4

Updated on Jan 23 2014

Version 1.4:
  • Better harmonic tone detector
  • Percussion filtering and enhancement of the harmonic components
  • Far better visualization of tones
  • New app icon
  • Modified coloring
  • Accumulation mode uses exponential window (a moving window of samples) instead of moving average (all samples since some time)





8 MB

Developer’s website




App requirements

  • Intel 64
  • Mac OS X 10.7 or later
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