A more serious app, in light of the news coverage of the missing college student , I have found an app that all of us can have on our phones.
It is free, allows you to notify 6 of your contacts of an emergency with one press , along with a 911 option.
There is also an option to ask any of the 6 tp call you if you need rescuing.
I downloaded it and have had my family as well.
Circle of 6 - android an iphone
free