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ReadBear vs ReadEra: catalog facts
ReadBear	ReadEra
Free Free and open source under the MIT licence.	Free Free to download and use without ads, according to the developer.
Android	Android, iOS
Reads PDF and CBZ comic files in one app Many reading options: layout, theme, spacing, language	Opens EPUB, MOBI, PDF, DjVu, Word, FB2 and comic files Reads books directly from ZIP and RAR archives
EPUB support is described as unfinished Small, young project with one main developer	Closed source Mobile only, with no desktop version
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
Not stated if an account is needed	No 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 September 23, 2026

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