Don't you just hate it when you need to position your character in a specific spot, but you can't accurately do so due to the iPhone's lack of single character movement? I think we've all been there.
Fortunately, SwipeShiftCaret solves that issue by allowing you to swipe your finger on the screen to move a character space either left or right.
It's an extremely simple tweak with no settings, but it makes editing on an iOS device so much more intuitive...