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SciSpace vs Paperpal: catalog facts
SciSpace	Paperpal
Freemium Free sign-up, with paid plans for more usage and enterprise options.	Freemium Free to start without a credit card, with paid plans.
Web	Web
Search across more than 280 million papers Chat with PDF to explain difficult papers	Language editing tuned for academic writing Citations in over 10,000 styles
AI summaries of papers still need checking against the source Full features require a paid plan	Hosted service that requires an account Many checks sit behind paid plans
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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