What's new in 1.2: • Tuner: each string keeps a tick once it is in tune, a selected string moves on to the next untuned one by itself, and the app tells you when all are in tune. • Chords: fingerings checked against published charango chord charts. • Learn: lessons show the chord diagrams they teach, also in chromatic mode. • Simulation: Palm mute and Mute sit at the foot of the neck, as icons. • Faster, steadier launch and listening.

Tune the charango, play it and learn it, all in one app. The tuner shows you the headstock and marks the peg to turn, four courses take you from holding it to real huayno and cueca, ten practice drills train your ear, hands and timing, 168 chords show you how each one sits on the charango's five courses, and a songbook of 37 songs puts them to work. Then it hands you the instrument. In Simulation the charango is on your screen: strum across the strings, or touch one to pluck it. • Tuner: the…