4 months on I still use it often to check the water temps and how the cars running and I still think it's great value for money!!
I haven't tried the 0-60 function I must admit, that's not my thing but I could have a go I guess if I'm out later, I'm not sure what my missus will think as it does a great job of re arranging our faces with the torque on my overtakes as it is
It connects as it creates a wifi network that you connect to via your iPhone in the settings menu and the open the app and connect to your car and it loads the correct settings and your away.
If your at the BMW meet on Sunday at the Heritage Motor centre your welcome to see it for yourself.