AudioTheory Guitars version 1.2.0 introduces the fullscreen chord selector, which allows you to view all available chords (with diagrams) from a single screen.

This builds on the chord playback functionality introduced in the last update as you can also play all of the chords from this screen. There's even a mini-keyboard at the bottom so you can see the note positions.

You can access this screen in one of two ways. There's now a slide-out menu on the chord box, from here select the 'chord sheets' option. There's also an 'all chords' button on the existing chord selector (the cog icon under each chord) where a new chord can be selected from the fullscreen interface.