A method of installing an application on a mobile user device is disclosed. A request for the application is received. Information is received related to the mobile user device on which the application is to be installed. A version of an application is determined to send in response to the request for the application and the information related to the mobile user device. The application version is sent to the mobile user device. Information is received related to the performance of the application version. Adapted application determination information is stored related to at least a portion of the received information.