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Lettura vs Raven Reader: catalog facts
Lettura	Raven Reader
Free Free and open source.	Free The open-source application is available without a license fee.
Windows, macOS, Linux	Windows, macOS, Linux
Standalone desktop app built with Tauri Free and open source with active development	No account and no data collection; subscriptions stay local Runs on Windows, macOS and Linux from one codebase
Documentation is mostly in the GitHub repository No mobile app	Electron application with a large footprint No synchronisation between machines
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
Not stated if an account is 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 September 22, 2026

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