I am an SEO specialist for an agency so I do SEO for a living. Like others have said, this tool nicely balances simplicity and depth of information.

I have run technical audits using ScreamingFrog, SEMRush, Labrika, etc. before - this tool is not a replacement for any of those. It is more like an SEO assistant that finds basic errors like missing meta titles, too long meta descriptions, etc. and reminds you to fix them with periodic emails. Then presents them in a nice To-Do list and calculates an overall Site Health score.

TBH, you can get most of this stuff for free - for example, create a free project on Ahrefs to crawl your site and combine that with info from Search Console on page performance, coverage issues, etc. BUT it is nice to have it in one place and receive the email reminders about current issues.

I think the real gem is actually the Insights tab where you can view GSC/GA data via integration. SiteGuru actually provides useful analysis here like Content That Needs Attention, Keywords at Risk, and Keywords on the Rise. I find it similar to Frase's Content Analytics tool, but slightly more straightforward.

Lastly, with the pricing model being per site, this tool is not as feasible for agencies so I just use it on my personal sites. I would have removed 1 taco for that but I think it's about fair value at $49 for one site.