Share and track live GPS locations with friends and family for FREE. No subscription or account set up required. Real-Time Location Sharing. The Tracker app allows users to drop pins on a shared map and switch live location sharing on and off periodically. Locations and pins are shared to all members within the same group. The Tracker app will drop pins for you based on the time period specified. Map icons and display name can be chosen to identify who is running, tracking or just observing.