Piano Atlas - Chords & Scales

Piano Atlas Studio is a music-theory atlas and practice studio for the piano. Every chord, scale and raga is drawn on a real keyboard, fingered for both hands, and played in a real grand piano's sound. Explore • Chord Atlas — 59 chord types in every key, with voicings and inversions • Scale Atlas — 162 scales, from the modes to world scales and all 72 Carnatic melakartas • Ragas — 205 janya ragas, with arohana and avarohana, and what makes a raga • Fingering Lab — standard scale fingering for both hands, going up and coming down, with every thumb crossing shown • Progressions, Circle of Fifths, Compare Chords and Scales, Arpeggios, Theory Practise • Play — connect your digital piano by USB MIDI and watch the notes light up, on a staff, with the chord named, a metronome and recording • Staff Trainer, Sight Reading and Note Trainer • Metronome with talas and tempo ramps • Guided practice sessions and your progress over time Write • Composer — write songs over chord changes, or let Surprise me start one, and print it as sheet music Free and Pro The free app includes 17 chord types, 48 scales, the whole progression library, all of Theory and more. Pro is a one-time purchase that unlocks everything: all chord types, scales, melakartas and ragas, the builders, unlimited songs, the full Staff Trainer and guided sessions. No account, no ads, no tracking. Everything stays on your device.

New in 1.0.14: - Scale Atlas: every key in "Work it out in other keys" now shows the staff, with Ascending, Descending and Up + down. - Google Drive backup gives a clearer message when Drive isn't available yet. - Composer: the blue dot stays in step with the music on every phone.