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Sitechecker vs SEOptimer: catalog facts
Sitechecker	SEOptimer
Freemium The single-page SEO checker is free; crawling, monitoring and rank tracking are paid…	Freemium Free single audits; white-label reports and the full toolset need a paid plan with free…
Web, Browser extension	Web
Free page audit with a score, status code and indexation status Crawler, monitoring and rank tracking in the same platform	Instant audit from a single URL Prioritised, plain-language recommendations
Most features beyond the single-page checker are paid Aimed at marketers, so reports focus on SEO rather than general site health	Report branding and deeper features are paid Scores are a summary rather than a full crawl
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.