Nice job. I have a self-made scanner using the elm327 chip. It's configured as a CAN bus reader. I was looking for a project like this for a long time now.
The layout of all scan software is actually very crowded and not very touch-screen friendly. Please continue this project and try to make your interface as touch-screen friendly as you can.
Will this be made skinnable so we can embed it in a front-end like RoadRunner