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Collate vs ChatPDF: catalog facts
Collate	ChatPDF
Free Free to download and use; cloud models can be used with your own key.	Freemium Free to use, with a paid Plus upgrade.
macOS	Web
Answers questions about a PDF or a folder of documents Links answers to source pages	Answers cite the passages they come from Folders for chatting across several files
Available for macOS only Local AI requires downloading a model	Documents are processed on a remote service Chat history is only saved after signing up
Downloadable app	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Needs internet
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

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