This application may help to save lifes. Basicaly it detects when the wire is disconnected from the earphones, and in case you don´t cancel the operation, it will send a text message with your position to the contacts which you prefer.
Dead Kitty Software is the official developer of this application which can be found in the Lifestyle category. Google Play shows that the app is rated 4.2 by its users. It's free of charge to get the .apk setup package of Guardian Angel and you can have a look at users' reviews on Droid Informer. This application installer requires 343 KB of free space to work fine on Android 2.1 and higher.
The security report shows that the app is safe.