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ReadBear vs Librera Reader: catalog facts
ReadBear	Librera Reader
Free Free and open source under the MIT licence.	Free Free to download.
Android	Android
Reads PDF and CBZ comic files in one app Many reading options: layout, theme, spacing, language	Wide format support including DjVu and comics Auto-scan of book folders with reading progress
EPUB support is described as unfinished Small, young project with one main developer	Android only Many settings can take time to learn
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it 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.