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Lettura vs Fluent Reader: catalog facts
Lettura	Fluent Reader
Free Free and open source.	Free Free and open source under a BSD 3-clause licence. The Microsoft Store and Mac App Store…
Windows, macOS, Linux	Windows, macOS, Linux
Standalone desktop app built with Tauri Free and open source with active development	Works fully locally, or syncs with Inoreader, Feedbin, Fever and Google Reader API services Regular expression rules that hide, mark read or star articles automatically as they arrive
Documentation is mostly in the GitHub repository No mobile app	Electron, so it is heavy for a feed reader The Microsoft Store version is recommended for auto-update; GitHub builds update manually
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: BSD-3-Clause
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 September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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