The app allows you to automatically share your coordinates with your friends and display the location on a map. Internet is not needed for the exchange of information, this happens through SMS. The map can also work without an internet connection. To do this, it is enough to use the menu item "Auto bypass current map" in the right places once with the Internet turned on.
If you want to look after children or elderly, you can configure the application on their phone and close their password settings.
Add to contact their friends, get them to confirm an exchange coordinates and always be aware of who and where he was.