1. An information processing terminal comprising: an application execution portion that executes an application; a sub-application execution portion that executes a sub-application in response to an execution request from the application execution portion, the sub-application being configured to provide a specified function for the application executed by the application execution portion; and a hidden screen display portion that, instead of displaying an execution screen indicating execution of the sub-application, displays a hidden screen hiding the execution of the sub-application while the sub-application execution portion is executing the sub-application, wherein the application execution portion executes, as the application, a destination selection application that selects a destination, and wherein the sub-application execution portion executes, as the sub-application, a position information provision application that supplies an external navigation system with position information about the destination selected by the destination selection application.