Systems, methods, and computer program products to perform an operation comprising dynamically selecting a first user hand position profile, where in the first user hand position profile includes a first range of reach of a digit of a first hand of the user while the user is holding the mobile device with the first hand in a first position, performing a first predefined operation to modify a first object, wherein modifying the first object causes the first object to be outputted at a location on a touchscreen display within the range of reach of the digit of the first hand, and outputting the modified first object on the touchscreen display.