And the process to add your friend is also easy job, simply send them a request to trace their location. If your friend accepts the request using the Find My Friend app, then his or her location will be viewable on a map.
And there is an option to set the time period to share your location at the moment with your group friends.
This one is good application actually, but sometimes it's hard to find all friends. Perhaps adding Twitter or Facebook integration would be smart idea, right?
Find My Friends supports iOS 5.0 and higher and can be used in iPhone, iPad and iPod Touch and its size is 10.4 MB.
Download Find My Friends app via iTunes.