Please, contact me if you have any problems with the app, or if you want to share your feedback!
You can find information about:
Chords, circle of fifths, exercises, intervals, note values, rests, scales, symbols (dynamics, articulation etc.)
There are multiple exercises available:
Listening exercises - intervals, chords, chord inversions, chord progressions (major)
Reading exercises: note reading (treble and bass clef), intervals
The app also includes a couple of helpful music theory tools.
Available in: english, german, italian, russian and swedish