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Scholar Inbox vs Litmaps: catalog facts
Scholar Inbox	Litmaps
Free Free to use.	Freemium Free sign-up with paid plans for more features.
Web	Web
Personalized recommendations rather than a raw feed Daily coverage of arXiv, bioRxiv, medRxiv and ChemRxiv	Visual citation maps from seed papers Alerts for new papers on a topic
Limited to the preprint servers and proceedings it indexes Recommendations need time to learn your interests	Not usable for building maps on small phone screens Advanced features are on paid plans
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 26, 2026

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