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TXYZ vs Zendy: catalog facts
TXYZ	Zendy
Freemium Free plan available; Pro costs $96 per year and Ultra $288 per year.	Freemium Offers free access alongside lower-cost paid access to premium literature.
Web	Android, iOS, Web
Combines paper search, reading and writing in one workspace Usable free plan with file analysis up to 100 pages	Combines a scholarly library with AI search and summaries Chat assistant gives answers with references
Free plan keeps writing Pages history for only 30 days Larger files and higher limits require a paid plan	Full access to premium content requires payment AI summaries should be checked against the papers themselves
Web application	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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