How can I hang on the iPad version of the game? This used to be possible on a PC.
Hold the "Move Carefully" button while you are jumping up to a ledge or climbing backwards down one. You'll hang until you let go of the careful control, or until you climb up or drop down with the up/down controls.
You can initiate a jump or climb down and then quickly move your right thumb to the careful control while in mid-animation, and it will work just fine.