In a wallet server including a processor having hardware, the processor acquires image information that includes a captured image of food provided to a user transmitted from a store terminal of a store providing the food, and user information related to the user provided with the food, and associates the acquired image information with the user information and transmits a display instruction to instruct display of the image information and a screen for accepting input of evaluation for the food to a user terminal of the user determined based on the user information.