Seems like a neat service. It doesn't scan endpoints that block unauthorized access (which makes sense) and points at the free trial of the more full-fledged offering. The only issue I have is that I'm very reluctant to sign up for a free trial with no idea of what pricing will look like.
So at Escape, we decided to ship a quick scan to check for the basic requirements: a dozen security best practices.
It's completely free of charge and you don't to create an account.
Let us know if you have any questions or feedback!