Provided is a mobile terminal device capable of performing, when a user moves the mobile terminal device as if the user operated an hourglass, a screen display and a time measurement accordingly. The mobile phone device 10 comprises a display unit 13, an inclination sensor 20, an hourglass function control unit 31 for measuring a set time and displaying the image of the hourglass on the display unit 13, and an inclination deciding unit 32 for controlling the time measured by the hourglass function control unit 31, on the basis of measured data from the inclination sensor 20.