I'm trying to come up with user interface ideas for a mobile app that can be entirely used with your thumb while holding the phone with one hand. While I've looked at Apple's guidelines it doesn't clearly define techniques.
For example, given a list of options, it's easier to swipe with the thumb to the right to delete a row, then selecting and tapping a delete icon.
I'm seeking a document or website that dives into a more practical approach to user interface design with a focus on mobile phones.