Android GPS Application

Hello, We require an android application that will map the devices gps movments. Ideally we would like to display this track over the google maps api (sattelite images / map view) We would like an easy to use button to start and stop the tracking of the device. When the stop track button is ended we would like it to ask for a name to store this track. We would also like a page were we can email a track from the device in the google earth KMZ / KML format. Any questions please let me know.