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Cubox vs Readeck App: catalog facts
Cubox	Readeck App
Freemium Can be tried for free, with paid features on subscription.	Free Free and open source under the GPLv3.
macOS, Android, iOS, Browser extension, Command line	Android
Highlighting and AI summaries of saved articles Question answering across the whole saved library	Native Android reading for a self-hosted Readeck library Actively maintained open source client
Website and much of the product are in Chinese No Windows desktop app listed	Requires a Readeck server and account Feature set is still growing beyond listing and reading bookmarks
Downloadable app, Hosted service, Browser extension	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-only
Account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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