Abstract: A system for trial use of application software comprises at least one user device and a server. The server is communicatively coupled to the user device. The server receives a request data for trying an application software, the request data is generated corresponding to an input on the user device, the server executes at least one part of the application software according to the request data and establishes a two-way communication with the user device, and the server and the user device transmits at least one image data and at least one control data via the two-way communication.

Abstract: A cloud management system for executing applications of Android system includes at least one user device and a cloud simulator. The cloud simulator couples to the user device via a network and is arranged for receiving a request from the user device, providing a first virtual phone interface corresponding to the user device to the user device in response to the request, wherein the first virtual phone interface includes respective applications of Android system, receiving an application selection from the user device and performing a first application corresponding to the application selection and returning the execution result for the first application to the user device for displaying via the first virtual phone interface.