Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Swarm - Swarm lets you earn prizes and compete with friends based on the places you go.
LockOnMe - LockOnMe is a location-sharing app, displaying targets and associated Points Of Interest on maps & fun radars.
Visits App - Your location timeline. Automatic and Private.
Foursquare - Foursquare is all about helping you find new ways to explore your city.
Arc App - AI powered location tracker