WhereZat

Track your friends or family's location on Map.
WherezAt is a location sharing and tracking app.

 So now your always late friend can't 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 doesn't wanna share his location, you know something's not right. 

(Locations' are tracked with user's consent).
Application use background location update "Continued use of GPS running in the background can dramatically decrease battery life."