An information processing terminal enables, during the execution of a predetermined application program, the addition of an additional program and the execution of the additional program in a predetermined memory. The information processing terminal includes a management device, an acquisition device, an execution device, and a deletion device. The management device manages the additional program and a plug-in point included in the application program by associating the additional program with the plug-in point. The acquisition device acquires, upon execution of the application program up to the plug-in point, the additional program associated with the plug-in point from a predetermined storage device. The execution device executes the acquired additional program in the memory. The deletion device deletes, upon completion of the execution of the additional program, the additional program from the memory.