Ideas to inspire...
Alarm for commuters and travelers when they have arrived at their destination. Uses Google Maps.
"R we there yet" is a location based alarm application, ie. when your location enters the perimeter of the alarm, the alarm triggers. It uses internet and gps (whichever is available) to determine and track your location in conjunction with Google Maps.
This is great for regular commuters who use public transport. Set the alarm for your destination and let the app let you know when you have arrived. So next time you miss your stop because you dozed off or were too engrossed in some activity, think of this app.
How often do people forget where they parked their car particularly if they parked in a large carpark? This app will come to your rescue. Set the alarm where you parked your car and then let the app lead you back.