Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
MuscleWiki - Understand your body, simplify your workouts
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
IIFYM - IIFYM, aka If It Fits Your Macros, is a fitness website that helps you achieve your health goals.
OwnTracks - Cross-platform location sharing
Macrosinc - Macrosinc is a fitness and healthy nutrition website that help people in gaining fitness and health-related guides.