The problem of the present invention is to be capable of efficiently using a system resource of a device. For solving the above problem, an application platform according to the present invention comprises determining unit for determining whether an application for installation or activation is installed or activated, wherein when the determining unit determines whether the application for installation or activation is installed or activated, the determining unit refers to a first resource use amount and a second resource use amount larger than the first resource use amount of each of a plurality of applications already installed or activated, a first resource use amount and a second resource use amount larger than the first resource use amount of the application for installation or activation.