Piano Companion is a flexible chord/scale dictionary with user libraries and reverse mode. Piano Companion allows you to find a chord or scale by its name. If you don't remember what's the name of a chord/scale, it helps you to find it by keys. Piano Companion shows chord/scale notes, degrees, fingering for both hands in major and minor scales. You can listen how a scale or chord sounds. You can see the list of compatible chords in the selected scale. Piano Companion has integrated sequencer (Chord Progression) which allows you to listen how chords sound with each other.

Key features:
βœ“ 1500+ piano chords, up to 6th inversions
βœ“ 500+ scales
βœ“ 12 root keys
βœ“ Chord Progression (chord sequencer for Android only)
βœ“ Circle of Fifths
βœ“ List of available chords in Circle of Fifths
βœ“ Key notations: English, Italian, Japanese, Russian, etc.
βœ“ Reverse chord & scale lookup
βœ“ Ability to display chord on the staff
βœ“ Plays chords
βœ“ Plays scales
βœ“ Plays arpeggiated chords
βœ“ Audio support
βœ“ Relative scale suggestions
βœ“ Compatible scale chords
βœ“ Scale lookup with major & minor scale fingering
βœ“ Flexible chord & scale search using keyboard
βœ“ User libraries
βœ“ Ability to create custom chords for a user library

iPhone/iPod/iPad

Lite: https://itunes.apple.com/us/app/piano-companion-lite-chords/id598574333?mt=8
Full: https://itunes.apple.com/app/piano-companion-chords-scales/id586097063?ls=1&mt=8


ANDROID

Lite: https://play.google.com/store/apps/details?id=com.binitex.pianochords
Full: https://play.google.com/store/apps/details?id=com.binitex.pianocompanion
Videos: http://www.youtube.com/user/binitex?feature=watch