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Detailed SEO Extension vs Seobility SEO Checker: catalog facts
Detailed SEO Extension	Seobility SEO Checker
Free Free, with no paid tier according to the developer.	Freemium Free account with 5 checks per day; paid plans start at $69.90 per month.
Browser extension	Web
Heading structure shown at a glance Checks X-Robots headers as well as meta tags	Scored report with clear recommendations Considers AI answer engines as well as search engines
Closed source Page-level insights only, not a full site crawl	Strict daily check limits on the free tier Paid plans are fairly expensive for individuals
Browser extension	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.