An embodiment of the present invention provides a method for managing applications of a broadcasting reception device and a companion device connected over a network. The method may include receiving a broadcasting signal, generating an application information list variable based on application information included in the broadcasting signal, receiving an application information-obtaining action from the companion device, the application information-obtaining action being indicative of a request message for obtaining information related to at least one specific application, transmitting an application information list variable corresponding to the at least one specific application in response to the application information-obtaining action, and providing a broadcasting service based on the transmitted application information list variable.