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Simple Comic vs Houdoku: catalog facts
Simple Comic	Houdoku
Free Free, with source code published on GitHub.	Free Free and open source.
macOS	Windows, macOS, Linux
Minimal native macOS interface Remembers reading sessions	Reads local manga files and extension sources Vertical and two-page reading modes
macOS only No library management or comic store features	Desktop only, with no mobile app Online sources depend on extensions
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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