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Highlights vs Preview: catalog facts
Highlights	Preview
Freemium Free to use, with advanced features in a Pro subscription that has a free trial.	Free Included with macOS at no extra cost.
macOS, iOS	macOS
Exports annotations to Markdown and popular notes apps DOI lookup and citation metadata for papers	Already installed on every Mac Handles both PDFs and images
Apple platforms only Advanced features require a subscription	macOS only No advanced editing of PDF text or OCR tools like dedicated editors
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Proprietary
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

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