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Nitro PDF Pro vs PDF Expert: catalog facts
Nitro PDF Pro	PDF Expert
Paid A paid licence or subscription is required after the trial.	Freemium Reading and basic annotation are free. Editing features require a paid plan.
Windows, macOS	macOS, iOS
Office-style interface with strong Word and Excel conversion Editing, OCR, redaction and signing in one licence	Genuine text and image editing inside the PDF, not just annotation Very fast on large documents, with a polished Apple-native interface
Paid licence with no free tier beyond a trial Windows and macOS only	macOS and iOS only Editing, OCR and conversion require a paid subscription or licence
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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