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Matter vs Flus: catalog facts
Matter	Flus
Freemium Freemium, with paid tiers unlocking AI summaries and narration.	Freemium The hosted service requires an account; the published source can be self-hosted at no…
macOS, iOS, Web	Web, Self-hosted
Combines newsletters, RSS feeds, and read-later saves in one inbox AI summaries and audio narration help process a backlog of reading	Combines feed reading with commented link collections Digest-style journal instead of an endless unread list
Full feature set requires a paid subscription Reading experience is centered on its own apps rather than open RSS standards alone	Interface and documentation are in French Hosted version requires an account
Downloadable app, Web application	Web application, Self-hosted, Hosted service
Closed source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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