DIY Alignment made simple, easy and fast: Phone AP Gyraline
I just saw the thumbnail for this video at lunch as well, but haven't had a chance to watch it yet. Just went through their website and looked at the instruction manual. Looks interesting, though maybe not a great fit for all wheel styles. Kind of seems like it's aimed at wheels with a noticeable lip for the fixture to butt against, but the software is a neat idea regardless and would probably work with a different fixture as well.