Piano Companion

Piano Companion is a piano chords and scales dictionary with user libraries and reverse mode with a chord progression builder. Our free app has circle of fifths with compatible chords (or chord wheel). Using circle of fifths and chord progression builder you can compose songs and learn, play chords and scales. You can compose music using our real piano and use your MIDI keyboard to play and record songs. It helps you to learn music theory too.

If you can’t remember the name of a chord or scale, this app helps you to find it by keys (or MIDI keyboard). For example, just press C, G and you will get C Major as the first chord in the search result. If you don’t see a chord, you can create a custom chord and use it for chord charts or your user library.

The Piano Companion app shows chord and scale notes, degrees, fingering for both hands in major and minor scales – and you can contribute your own custom fingering too. Additionally, you can listen how a scale or chord sounds in the loop or arpeggiated and other music theory information. You can see the list of compatible chords in the selected scale or list of compatible scales for a selected chord.

The app helps you to experiment with different chord progressions using our Chord Progression Builder using relative or common chords and other music theory related chords.