The present invention provides a technique for making it easy to operate an operator interface displayed on a touch panel display. A tilt detector detects the position of the apparatus. The touch panel display displays an image of the operator interface and senses touch by a touching object, where a predetermined process is performed in response to a touch action on the operator interface. A controller moves a display position of the image of the operator interface on the touch panel display in a direction in which an information processing apparatus tilts, according to changes in the apparatus posture detected by the tilt detector.