Compare software

R DiscoveryOpenRead
Freemium

Free to use, with paid plans listed on its pricing page.

 Freemium

Free tier available, with a paid Pro plan.

Android, iOS, Web, Browser extension Web
  • Personalized feed of new research papers
  • Chat PDF and AI answers with references
  • Search across more than 300 million papers
  • Compare several papers to spot agreements and contradictions
  • Some features require a paid plan
  • Closed source hosted service
  • Web only, no desktop app
  • Advanced features sit behind the Pro plan
Downloadable app, Web application, Browser extension 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
Not stated if it works offline Needs internet

Checked October 1, 2026

Checked September 26, 2026

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