We are involved in development on the android phone ourselves. We just published our newest app. It's called meet-me:
With only few fingertips you can find your friends in the biggest crowd. Their location is presented by a stylish arrow and distance. Awesome: the positions are dynamically updated. So you can navigate to moving destinations!
Legendary: No personal Data is stored nor any movement profile created, as Google normally would do.
Please take a look.