In accordance with some embodiments, a computer-implemented method is performed at a portable multifunction device with a touch screen display. The computer-implemented method includes: displaying a home menu comprising a plurality of application launch icons; detecting activation of any respective application launch icon; and, in response to detecting the activation, displaying a first animation of a transition from display of the home menu to display of an application that corresponds to the activated application launch icon. The first animation comprises expanding an image of the application.