A vehicle-mounted application management device manages an application that is executed by an information terminal mounted in a vehicle. The vehicle-mounted application management device comprises a management unit for detecting a vehicle state that is the state of the vehicle. The management unit is configured to manage, on the basis of the detected vehicle state, the on-off of at least one of a transmission path of input information given through the execution of the application and a transmission path of output information output through the execution of the application.