is a free android application for learning guitar scales and memorize the notes on the guitar fretboard. It contains chromatic, Ionian (major), harmonic major, Dorian, Phrygian, Lydian, Mixolydian, Aeolian (minor), Locrian, harmonic minor, major pentatonic, minor pentatonic, blues pentatonic, Hungarian Gypsy, Ukrainian Dorian, Acoustic, Persian, Algerian, Flamenco, Hawaiian, Chinese, Byzantine and Neopolitan scales.

Guitar Scales app contains scales for standard, 1/2 step down, 1 step down, standard B, drop D, drop C and drop A tunings.