Track your friends or familys location on Map.
WherezAt is a location sharing and tracking app.
So now your always late friend cant lie to you about being on the way while still in bed. The locations are updated on the map as the people travel, so when he doesnt wanna share his location, you know somethings not right.
(Locations are tracked with users consent).
Application use background location update "Continued use of GPS running in the background can dramatically decrease battery life."