Bug: In guitar mode I only hear 2 tones for 3-tone chords (expected 3 tones).
The app has been tested thoroughly :)
Not a guitar player, but I think you can tune a guitar to play that note.
No amount of testing will protect against incorrect design.
it's a feature that i will definitely look into adding.
None the less, i will try to add those lower notes(which is way more complicated than it sounds for various reasons).