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Komikku vs Librera Reader: catalog facts
Komikku	Librera Reader
Free Free and open source.	Free Free to download.
Android	Android
Free and open source Extension system for adding sources	Wide format support including DjVu and comics Auto-scan of book folders with reading progress
Android only Not distributed through Google Play	Android only Many settings can take time to learn
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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