Bestbuy offers FIXD - Vehicle Diagnostic Device - White for $39.99 (orig. $59.99) with free shipping.

Product Description:
Get a handle on your car's health with this FIXD sensor. It works with most gasoline-powered automobiles and connects to a smartphone app to help diagnose the vehicle's maintenance needs. Find out when your car needs a tune-up or why the check engine light is on with this FIXD sensor.

Thanks Maggie