Android App for youthwork (incl. GPS-positioning)

We need an Android app for our youthwork, which should have the following functionality: - an up to date list with upcoming events (maybe an integrated Google calendar?)-> should be easy to maintain for us; on the same page there should also be a box with the last facebook and twitter status - a Google maps integration which shows the current position of two other smartphones from our staff (additional plus: as well as the position of the app user himself) - a page which contains information (small pics and a little text) about current projects etc. The content should be easy to edit for us - a page with contact information which can be clicked on directly (Email opens Email, phonenumber starts call etc) Don't hesitate if you have any questions! We are looking forward to your offers!