An in-vehicle device includes: a memory for storing a gadget corresponding to an icon, a display content of which is changed with time, wherein the gadget provides a process; a display having a screen, on which the icon is displayed; an operation receiver for receiving an operation to the icon; a controller for executing the process when the controller determines that the operation receiver receives the operation to the icon under a condition that the display displays the icon; and a driving condition information obtaining element for obtaining driving condition information of a vehicle. The controller controls the display to change a display mode of the icon based on the driving condition information when the display displays the icon.