Lifeline is another safety app designed for people walking alone.  How it works is that there is a button on your phone’s screen that you hold down with your thumb while you walk.  If your thumb comes off of that button at any time an alarm goes off and authorities are alerted.  If you do not put in the disarm code, authorities are called to the scene.  To me, this seems like an app that may trigger too many false alarms, but I have not used it first hand to know for sure how sensitive it is.

Check it out for yourself and let everyone know what you think!