A computer-implemented method and system for updating application data for a first instance of an application via C2DM is disclosed. An application server may receive a request from the first client computing device for updated application data via a network connection. The updated application data may correspond to a second instance of the application at a second client computing device. In response to determining the second instance of the application at the second client computing device supports push notifications, the system and method may generate a C2DM message including a user ID corresponding to the first client computing device and the request for updated application data. A server may then send the C2DM message to the second client computing device, wherein the C2DM message causes the second instance to wake up and generate the updated application data. The updated application data may be returned to the first client computing device.