Stranger Danger for Android
In the instance of an emergency, you just click the emergency message button and in seconds you can record a message when there just isn't time to type something out.
Stranger Danger will then voice message to your loved ones alerting them of the situation, while providing them with important GPS information. If you don;t have cellular data or wifi, you can send an SMS containing the GPS data and a brief message.
by S####:
Interesting concept. I wish it had a better UI but it does what it says it is supposed to do.