Does Seokai guarantee #1 Google rankings?

No, and honestly, be cautious of any tool that promises you a #1 spot. Search engines rank pages on a lot of signals at once, content quality, site authority, backlinks, how people interact with your pages, and how tough your competition is. No app controls all of that.

What Seokai does do is get the fundamentals right: well-written metadata, descriptive alt text, structured data, and a clean technical setup. That gives your store a fairer shot at competing, but it's not a promise of any particular position.