Hey I just released an app called Check On Me that I developed because I'm a single dad with a three year old who is too young to pick up a phone and call for help if something were to happen to me. Check On Me detects motion/activity on my phone and if it detects none for an hour during times I should be awake, it will text an emergency contact asking them to check on me to make sure I'm okay. This application would also be great for use with people who are older and living by themselves. The next release will include the ability to text the person with a code and have the phone send back its location. Thanks for looking!