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PDF Expert vs Combine PDFs: catalog facts
PDF Expert	Combine PDFs
Freemium Reading and basic annotation are free. Editing features require a paid plan.	Paid Sold through the developer's online store and the Mac App Store.
macOS, iOS	macOS
Genuine text and image editing inside the PDF, not just annotation Very fast on large documents, with a polished Apple-native interface	Drag and drop PDFs and images to build a new document Interleaves pages from two PDFs, useful for double-sided scans
macOS and iOS only Editing, OCR and conversion require a paid subscription or licence	macOS only Paid app with no free version mentioned
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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 22, 2026	Official website Full listing and sources Checked October 2, 2026

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