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SEO Site Checkup vs Ahrefs Free: catalog facts
SEO Site Checkup	Ahrefs Free
Freemium One free check per day without an account; more checks and monitoring need a sign-up or…	Freemium Free for verified websites; paid Ahrefs plans add more tools and data.
Web	Web, Browser extension
Fix instructions for each failed check Competitor comparison in the same report	Technical site audit at no cost Backlink and keyword ranking data from Ahrefs' index
Only one check per day without signing up Monitoring and tracking features are paid	Requires an account and site ownership verification Full data for other people's sites needs a paid plan
Web application	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
No account needed	Account needed
Needs internet	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.