This app supports "X-Plans" for teens and their families. The app makes it quick and easy to construct a SMS contacts list for the agreed upon X-Plan and for the teen to send X-Plan SOS messages. Those messages include location information from the phone's location services with a link to Google Maps with the lat/lon of the phone.

This article has a nice description of X-Plans: https://bertfulks.com/2017/02/23/x-plan-giving-your-kids-a-way-out-xplan/