HP sells a number of multifunction printer/scanners with the ‘duplex scanning’ feature listed. Many of these printers support ‘duplex scanning’ the same way your grill supports ‘duplex grilling’: Both sides get done as long as you are there to physically turn it over. Trying to scan both sides of a form — especially something that is multipage (and the author didn’t think it needed page numbers) can be particularly daunting and once you finally figure out a method that works, you will probably forget how you did it by the time you need to do it again. HP either needs to build that support in the printer so it ‘just works’ or they need to de-list that capability from their marketing. This software ‘just works’. You put the paper in the ADF, let it scan, pull the pile out the other end, rotate 180 degrees, put the paper back in the ADF, press ‘CONTINUE’ on the app and it gets done. The other features of the app are basic, but that’s the only thing you really need, if you are on a Mac: duplex scanning. So, 5 stars for doing exactly what they say, doing it correct, and doing it simple.