- Chord dictionary with over 1,000 chords for piano and guitar
- Listen to a chord by tapping on it, or arpeggiate by swiping
- Reverse search for chords containing certain notes (using piano or fretboard)
- Search for chords by root, quality, and/or extension
- Sort chords by key, number of pitches, etc.
- View different inversions and omittable notes
- View a list of related scales
- Guitar chord charts for all chords (even custom ones)
- Supports multiple guitar tunings and instruments
- Scale dictionary with over 1,000 scales
- Search for scales by root and name, and filter by various tags
- Reverse search for scales containing certain notes (using piano or fretboard)
- Sort scales alphabetically, by key, by number of pitches
- View scale degrees and note names
- View ascending and descending versions
- View scales in the treble or bass clef
- View all modes and scale chords
- Interactive circle of fifths
- Learn to recognize notes, melodies, intervals, chords, and scales by ear
- View musical terms and their definitions/illustrations
- Special keyboard for typing and previewing chord symbols
- Includes 4 MIDI Audio Unit Plugins
- Control other apps with a circle-of-fifths layout
- Create your own chords, scales, fingerings, ear training levels, and definitions
- Add custom instruments and guitar tunings
- Show set theory information for any pitch class set, including Forte number, pitch constellation, and Tonnetz
- Change color scheme
- Choose the playback instrument (upload any .sf2 file)
- Show only basic chords/scales (for beginners)
- Choose note naming (English or Solfège)