Music education · macOS, iPadOS, iOS · in development

Scale Demon

Learn your instrument inside out through practical music theory drills.

The problem: You need a comprehensive and engaging way to to learn music theory — scales, chords and pitch sets — that also tracks all the material you're getting into your ears and under your fingers.

In developmentmacOSiPadOSiOS
IN DEVELOPMENTMIDI inputShared note stateStandard / HexFretboard or keyboardInterval feedback
Fig. — Scale DemonSchematic

Incoming MIDI is interpreted and shared note state drive the selected fretboard or keyboard view and interval feedback. Multichannel hex guitar interpretation can retain per-string identity (fast, accurate); Standard input does not invent a string.

Is this you?

  • 01You know some theory and still cannot find what you need across the neck in real time.
  • 02You want a more visual, intuitive approach to music theory and the execution of musical ideas on your instrument
  • 03You want strong visual feedback/assistance on what you are actually playing, as you play it.
  • 04You work with pitch sets and interval structures rather than conventional musical identifying terms.
  • 05You want to learn an instrument faster, no matter the tuning or number of strings.
  • 06You need a practice coach

What it is

Scale Demon is a music education app for guitarists and other musicians who want a more visual way to explore scales, chords, pitch sets, interval patterns and fretboard structure.

This application is designed around real-time musical input, practice feedback and deeper fretboard understanding — driven by any MIDI-generating instrumen. Feed the demon notes via a pitch-to-MIDI plug-in, a hardware guitar synth or a MIDI keyboard — even an EWI will work! Select a fretboard and keyboard visualizer -- whichever work for your way of learning.

In development

  • Guitar fretboard and keyboard visualisers
  • Scales, chords, pitch sets and interval patterns
  • Real-time input from any MIDI source
  • Practice feedback

Specifications

StatusIn development for macOS, iPadOS and iOS
InputAny MIDI-generating instrument or pitch-to-MIDI plug-in

System requirements

Current Mac development buildmacOS 15.5 Sequoia or later
Current iPhone / iPad development buildiOS / iPadOS 18.5 or later
MIDI inputA MIDI instrument or software MIDI source; an audio instrument needs a separate pitch-to-MIDI converter

Scale Demon is still in development. These are the current build targets, not final release requirements, and they may change. No measured CPU or RAM minimum is published. Any MIDI-device driver or pitch-to-MIDI software you use has its own requirements.