This is a common trend I've seen repeatedly. They have a great video on their website that makes it super obvious what they do in a short amount of time, and basically no information other than that to help you decide if it's worth looking at.

Honestly, it's not a complicated system. Four screenshots would convey the process super clearly, and they could be screen caps from the video. The product itself seems simple, clean, and easy to explain. I'm not sure why people don't bother doing so.