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Komikku vs Paperback: catalog facts
Komikku	Paperback
Free Free and open source.	Free No ads; the site does not list any charges.
Android	iOS
Free and open source Extension system for adding sources	No ads Extensions add content sources
Android only Not distributed through Google Play	iOS and iPadOS only Content depends on third-party extensions
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

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