Where are your children now? This app tells. Mom can have a look where the kids are. Dad can ask mom to pick a milk on the way to go home.
Where are your class mates? Can tell them to meet up for reviewing home work.
Where are your friends now? With this app, you can locate them, sms, call them.
When user load the app, it will submit location once per 3 minutes so it wont drain the battery. Other in the circle can tell where user are and easy text or call with a single touch.