If your car doesn’t support onboard crash notification, or if you don’t want to pay the full $199 a year OnStar fee, you can now use a $99 a year Android application called Collision Watch. It will be available by the end of the year and it will make use of your phone’s accelerometer and GPS sensors to decide whether or not a crash has taken place.

The next step is to send a text message to your selected primary contact, letting them know that it is possible that you’ve been in a crash. If the primary contact doesn’t respond within 120 seconds, two secondary contacts are notified, and in case they don’t respond either, it’s time for the app to call 911 or a public safety answering point (PSAP).

The PSAP will receive data about the speed of the vehicle at the time of the crash, and Wayne Irvin, CEO of Iconosys Inc – the company that designed the app – would also like to create a protocol through which 911 increases their response urgency from car ambulance to helicopter ambulance depending on the speed of the crash.

Cost of the app for additional Android phones within a family is $49 per year, and Collision watch won’t work with iPhones because .. wait for it .. Apple wasn’t very easy to deal with.