For a mild build, torque app is great..it monitors everything the areoforce monitors, reads and clears codes as well..only down fall is Bluetooth lag..so there is a microsecond delay..I have both torque and aeroforce....you can also log with torque..it's pretty neat...for a cheap 20bucks, it will do what you need it to do and monitor kr...for bigger builds obviously wb and areoforce would be the best.