Notify your friends and family with the alarm situation and it's place!
This app allows you to send SOS messages to the defined phone numbers. Moreover, you can add your geo position, so your friends can find you as soon as possible and help to get out of trouble.
For those who cares about their privacy - https://bitbucket.org/bebright/sosmessage
App was written in emergency mode so sources and resources are a bit scruffy))