This is interesting, thank you for sharing.

One of the core values we are providing is the hassle-free analytics we provide that lets you see core metrics like close-rates of individual explanation boxes, successful completion rate of the tour and the amount of time your users spend on each explanation box.

Also, being able to interactively build a tour for your website is really valuable especially if you are a marketer or a non-technical manager who wants to do this.

We also don't require IDs for elements which makes it very easy to try and iterate.