This app works! I tested it out by creating a memo and then going somewhere without telling my fiance. I told him to use whatever alert he got to find me. I set the time I would be at my destination at 10 min. Within 30 min he had gotten the alert and found me following the instructions from the alert. My friends and I have always relied on each other to call for help if they werent back in X amount of time. The problem is we would only know a few bits of information and if they got off track we would have no idea where to start looking! Everyone should have this app. Young, old, women, men, everyone! It could be something as simple as taking a wrong turn and getting lost or something as serious as being attacked. I am glad that it is free and is available to everyone. You have nothing to lose and it could save your life. It is a little tricky to use at first but once you test it you will see how easy it is.