Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Candidate - A Q&A game to meet new people
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Clocked - Dating matches for city based millennials.
OwnTracks - Cross-platform location sharing
Datezr - Mobile app with quick date ideas based on location