A: You can see here how it compares to many other tools, like SEMRush, Moz, Ahrefs:

https://seotools.completeseofunnel.com/

That will help, because ubersuggest doesn't do anything extra to those.

What I can tell you right from the start is that Keyword Research data in Squirrly SEO comes from our proprietary services (built by us) and we don't use Cached keyword data.

Ubers has a cache of about 1 year, as do many of the other SEO tools out there.