I have one of them and the app torque pro I think it's called and it will read codes and clear them. It's also got a lot of gauges you can set up. I dont use mine now that I have the colour mfa as it does it aswell. It was good when I did use it.
If you haven't bought one yet if you can wait until I collect my car from badger 5 its in my glove box you can have it. I'll post it to you.