You are sitting on a commuter train on a cold and wet Tuesday morning with an hour’s trip to work. You are dreaming of escape. A holiday in the sun. You boot up the tablet you to pass the boredom. Website or app?

To profit from a free app, the app must support your enterprise. How can you monetize your app?

Mobile devices can detect their locations using a number of different mechanisms.  This can be used to display your user's position on a map, or display interesting locations, and show how to get there.

What features can you add to your app? What are the cost, management and technical implications?