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Sitechecker vs Semrush Site Audit: catalog facts
Sitechecker	Semrush Site Audit
Freemium The single-page SEO checker is free; crawling, monitoring and rank tracking are paid…	Freemium A limited free crawl is available; larger audits require a paid Semrush plan.
Web, Browser extension	Web
Free page audit with a score, status code and indexation status Crawler, monitoring and rank tracking in the same platform	Issues ranked by severity with fix suggestions Covers AI search visibility as well as classic SEO
Most features beyond the single-page checker are paid Aimed at marketers, so reports focus on SEO rather than general site health	The free crawl is limited Full use requires a paid Semrush subscription
Web application, Browser extension	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is 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.