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Readwide vs Librera Reader: catalog facts
Readwide	Librera Reader
Free Free and open source under the Apache 2.0 licence.	Free Free to download.
Android	Android
Opens many formats, including HWP/HWPX and comic archives Reading history search and bookmarks	Wide format support including DjVu and comics Auto-scan of book folders with reading progress
Young project with a small user base Android only	Android only Many settings can take time to learn
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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