This app needs "Always" access to the location (GPS) information. Even when you are not in a car.
As a result, the app drains the battery of the iPhone.
I am giving this one star until they fix this design flaw.
IMO, the app should access the GPS only when it detects the Bluetooth dongle that was paired to the phone. Or better still, have the dongle record the location information.
APrasad about Drive Safe & Save®