Optimize the Verse Picker
Often when using the verse picker I find myself wanting to be able to swipe left or swipe right. If I accidently select the wrong book, my natural inclination is to swipe right to go back. And when I'm looking to go to a different chapter in the same book, I feel like I should be able to swipe left and let the current book/chapter be chosen as the default.
Also, I'm not sure of the need for the book to type in book/chapter/verse. If I was doing that I wouldn't need to invoke the verse picker since we already have that in the go to box. Maybe display (read-only) the current book/chapter/verse and make them sub-tabs, buttons or simple hotspots so that touching the chapter takes me to the chapter selector, etc.