best computer software for diagnostic diesel

This is an OBDII dongle that connects to a smart phone that is the display unit.

I don't know if it is good or not but it looks like a possibility and the price isn't bad. To give you an idea of what I think would be a good starting point I will include something I found on Amazon. Perhaps together we can come up with a short list of good ones to consider and a long list of junk to avoid. What I would like to happen here is for others to suggest options they have personal experience with. I don't know much about other options other than the one I have and a few other profe$$ional units I have worked with. That is too expensive for most of us who don't do professional work. I have such a scanner but it cost $2500 and needs updates that cost $500 at a time. It needs to access every module on the vehicle, read codes and data, record, graph and chart data and clear any code that the modules set.

I firmly believe that one of the first tools one needs to acquire to work on modern vehicles is a scanner.

Best computer software for diagnostic diesel