I am considering getting an app (Android) on my phone so I can scan for codes for check engine lights (for various cars in the family). Just thought it might be handy to have. Also it would of course be necessary to have a blue-tooth (or wifi in some cases?) connection to the OBD2 port. Cash-flow is not abundant so I'm looking for something that is a good value, yet reliable. So I'm looking for suggestions for a good app and a good device to connect to the OBD2 port that can communicate with the phone. Phone is a Droid Mini if it matters. Thanks!