Free GEO Tools for AI Visibility

Which GEO tool should I use?

Generative Engine Optimization (GEO) is about making pages easy for AI systems such as ChatGPT, Perplexity and Google AI Overviews to find, understand and quote. The three tools cover the three steps of that work:

• GEO Checker — audit one existing page. You get a 0–100 score from rule-based checks on the raw HTML and robots.txt, three pillar sub-scores, and a list of what to fix.
• GEO Comparison — benchmark your page against a competitor with the same checks, and see which signals each page wins.
• Question Opportunity Finder — plan new content from question templates and page types for 12 niches.

How are the scores calculated?

The checker and the comparison tool share the same transparent, rule-based method. Each check — such as indexability, text in the raw HTML, AI assistant access in robots.txt, an answer near the top, author and date — has a fixed weight and belongs to one pillar: Findable, Readable or Choosable. The score is the weight of the passed checks as a percentage of all checks that apply to the page; product checks only count on product pages. No AI model guesses the result, so the same page always gets the same score and every point can be traced back to a specific check.

How do the tools fit into a GEO workflow?

A practical routine is: find the questions your audience asks, write or restructure a page that answers them directly, check it, and compare it with the page that currently gets cited. Repeat after each update. The articles below explain the why behind each step:

• What generative engine optimization is and how it differs from SEO
• How AI answer engines decide which sources to cite
• 15 GEO mistakes that keep pages out of AI answers

Who are the tools for?

Marketers, SEO specialists, agencies, founders and developers who want a fast, explainable view of how ready their pages are for AI answers — without signing up. You can also see how well-known sites score on the GEO rankings page.

Frequently asked questions

Are the Horus Index GEO tools free?

Yes. All three tools are free to use with no login and no credit card.

What is the difference between the GEO checker and the comparison tool?

The checker scores one URL. The comparison tool runs the same checks on two URLs and shows which signals each one wins.

Do the tools use AI to score pages?

No. Scores come from fixed, weighted rules applied to the page HTML, so results are consistent and explainable.

Can a GEO score guarantee AI citations?

No. The tools measure on-page signals. Authority, links and each AI system’s own ranking also affect which sources get cited.