The Caarmo app works with the Caarmo OBD (On Board Diagnostics) device connected to the users vehicle. The app provides real-time vehicle diagnostics, driver behavior and location for one or more vehicles belonging to the user. The app is connected to the OBD device over the smartphones wireless data connection. The user’s mechanic can also be provided access to the car’s diagnostic data so that the mechanic can offer expert advice and a higher level of service to the user.