I don't think anything can compare to Ahrefs to be honest (maybe Semrush, but Semrush is pretty big too, Screpy is not).
Also, I just remembered that I took on their AppSumo deal a few years ago, but I rarely got to use Screpy, I just logged in and saw that I had several projects added there that I don't even own anymore (I either sold them, or the domains have expired... I can't remember what my plans have been with these sites for the life of me...)
All I remember is that I needed a site audit (to check my sites for errors), and back then Screpy was the best option (for price) for me.
Anyway, I just logged in (thanks for reminding me that I have this by the way

) and I can see a lot of stuff to mess around with, including site audit, keyword tracker, and a site breakdown in general, by content, images, links, etc... pretty interesting stuff, and for $15 / month for their biggest plan I think it's worth the money if you're average user...
But like I said, it can't compare to Ahrefs since that's what you wanted to know, Ahrefs and Semrush are in their own league