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BookLogr vs Sobuu: catalog facts
BookLogr	Sobuu
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the Apache-2.0 licence, with no ads.
Web, Self-hosted	Android
Book lookup by title or ISBN via OpenLibrary Export to CSV, JSON and HTML	Page-by-page reading progress and reading time Comments tied to a page so others avoid spoilers
Expect bugs and breaking changes during active development Tracks books rather than reading ebook files	Android only Social features depend on other readers using the app
Self-hosted	Downloadable app
Open source	Open source
License: Apache-2.0	License: Apache-2.0
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 October 2, 2026

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