Simple Music Note Workout

Simple Music Note Workout lets you practice where your notes are on your instrument, music notation reading, and note recognition by ear. Learn your guitar fretboard or your piano keyboard, with a teacher that’s always available and never tired.
The app will pick a note at random and wait for you to play it back on your instrument. Through pitch recognition, it will tell you if it’s the right one, and if not, which note you played.
There are 3 levels of difficulty : first one will pick notes among C, E, G. 2nd will pick notes from the C major scale, and 3rd one will pick notes from the chromatic scale.
Two exercises (music notation and ear training) are available through an in-app purchase.