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Readwise Reader vs Cubox: catalog facts
Readwise Reader	Cubox
Paid Paid subscription.	Freemium Can be tried for free, with paid features on subscription.
Windows, macOS, Android, iOS, Web, Browser extension	macOS, Android, iOS, Browser extension, Command line
Handles many content types in one inbox, not just web articles Deep highlighting and search tools for power readers	Highlighting and AI summaries of saved articles Question answering across the whole saved library
Paid subscription required Most valuable when paired with the separate Readwise highlights product	Website and much of the product are in Chinese No Windows desktop app listed
Downloadable app, Web application, Browser extension	Downloadable app, Hosted service, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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