Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.

Habitica - Habitica is a free habit building and productivity application.

Mapple.me - Mapple.me bridges the gap between available time and availability of friends to increase social...

Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.

OwnTracks - Cross-platform location sharing

Loop Habit Tracker - Loop Habit Tracker (AKA uhabits) helps to create and maintain good habits in order to achieve their...