A method for generating and providing a mobile application executable on a mobile device, and designed for the configuration, maintenance, diagnosis of data and functions of a data processing device, and coupled to the mobile device via a communication link. The mobile application is hosted in the data processing device and is loaded from the data processing device into the mobile device after the communication link is established, wherein content and/or functions of the application data describing the mobile application are dynamically generated or updated by means of a generation logic implemented in the data processing device on the basis of current data of a configuration and/or a runtime environment of the hosting data processing device, and wherein the generation logic is designed to record data of a configuration and/or runtime environment of further data processing devices coupled to the hosting data processing device via a network.