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Raven Reader vs Lettura: catalog facts
Raven Reader	Lettura
Free The open-source application is available without a license fee.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
No account and no data collection; subscriptions stay local Runs on Windows, macOS and Linux from one codebase	Standalone desktop app built with Tauri Free and open source with active development
Electron application with a large footprint No synchronisation between machines	Documentation is mostly in the GitHub repository No mobile app
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 22, 2026	Official website Full listing and sources Checked September 23, 2026

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