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R Discovery vs Wispar: catalog facts
R Discovery	Wispar
Freemium Free to use, with paid plans listed on its pricing page.	Free Free and open source under the GPL-3.0-or-later.
Android, iOS, Web, Browser extension	Android
Personalized feed of new research papers Chat PDF and AI answers with references	Feed of new abstracts from followed journals Uses open Crossref and OpenAlex data
Some features require a paid plan Closed source hosted service	Shows abstracts; full text depends on journal access Needs an internet connection to fetch new articles
Downloadable app, Web application, Browser extension	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
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 October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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