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ReadEra vs ReadBear: catalog facts
ReadEra	ReadBear
Free Free to download and use without ads, according to the developer.	Free Free and open source under the MIT licence.
Android, iOS	Android
Opens EPUB, MOBI, PDF, DjVu, Word, FB2 and comic files Reads books directly from ZIP and RAR archives	Reads PDF and CBZ comic files in one app Many reading options: layout, theme, spacing, language
Closed source Mobile only, with no desktop version	EPUB support is described as unfinished Small, young project with one main developer
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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