Here you can see the redefined design and experience for the iPhone Quora app. I've limited the makeover to the question viewing, answer viewing, switching between top answers and calling main menu from anywhere in the app. As an answer switching mechanim I used a new UI element which hasn't been implemented anywhere yet and is exceptionaly conceptual!! For more details look here
Swipe to the top answer screen
Full top answer screen
Pinch for votes and social info
Full info on votes and friends
Pan inside the circle to move between the answers with different votes
Notice 399 getting more prominent since it is the current choice
Pinch horizontally anywhere in the app to call the main menu
Full Main menu screen