Stone app for iPhone and iPad

Stone was designed to help musicians to find chords, substitutes and alternative voicings for a given set of harmonies and scales. Give Stone the tones and Stone shows all chords and scales.

The set of tones is defined by adding chords, scales, single tones or by tapping on one of the following instruments and tunings:

1. Guitar Standard Tuning
2. Piano and Keyboard
3. Bass Guitar Standard Tuning
4. Mandolin Standard Tuning
5. Bouzouki Standard Tuning
6. Guitar Drop D Tuning
7. Guitar Double Drop D Tuning

Since all chord representations are displayed on a common set of instruments Stone is the application to find alternative voicings and substitutes and to learn about harmonies and their relations as well.