Examples are related to operating a user interface of a dual-screen computing device. One example provides a computing device, comprising a first portion comprising a first display and a first touch sensor, and a second portion comprising a second display and a second touch sensor, the second portion connected to the first via a hinge, the hinge defining a seam between the first display and the second display. The computing device is configured to receive a touch input at the first display moving an application that is currently displayed on the first display and not on the second display toward the second display, detect the touch input releasing the application within a predetermined area, and span the application across the first display and the second display.