I would like to develop an app for sailors. The idea is to track regattas, so the app needs to use the gps and accelerometer in order to track the position and speed of each sailor.
Every sailor would have its own profile to login (maybe a facebook or linkedin connect) and the info of the boat (name, position, speed...) should be also streamed in real time to an external web page so that people at home could follow the regatta.
Also an internal chat for every regatta, calendar, push notifications and e-commerce would be much appreciated.
Languages: spanish and english.