Chorus - The Chord Genius is a place where every guitar player can play and enjoy music the way they're supposed to.
You can enjoy Chorus by being a beta tester. Sign up via this link or the website to get an invitation:
I think Chorus will be the best guitar app because of it's reliability and it's precision of the chords and lyrics synchronization. One thing that can still be improved is the number of the song library.
Reliability, UI/UX, Choice of modes