Examples of warning apps currently used Earthquake apps Used in Japan and earthquake sensitive areas of America (California especially) Send active alarm/notification to your phone when nearby seismographs pick up high vibrations in the earth. They also give you a history of earthquakes in the area that you’re in and gives you informational resources for better preparation. Weather warning Notify you in real time when there are hurricanes, tornados, tsunamis, floods, storms or wildfires in your area, and evacuation plans for the natural disasters. Some include one-touch “I am safe” buttons,which sends an alert to a person in your contacts. Some also include voice alerts to wake people when they are sleeping. Medical tracker apps Notify you of the closest public AED machine or a public place you can use a first aid kit, as well as nearby emergency services, or the number to call for a hospital when you are abroad. Ide...