The present invention provides a non-transitory computer-readable storage medium storing a program that causes a computer of a portable terminal including a display device to function as: a registration unit accepting registration of user information including at least information about a swing characteristic of a user; an accepting unit accepting input of specifying information that specifies a golf product; a calculation unit reading out information of the golf product specified by the specifying information from a database and calculating a degree of fitting of the golf product to the user based on the readout information and the user information; and a display control unit causing the display device to display a calculation result of the calculation unit.