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Bluesky vs Damus: catalog facts
Bluesky	Damus
Free Free to use; the flagship app is a hosted service built on the open AT Protocol.	Freemium Free to use; the optional Purple membership is paid.
Android, iOS, Web	macOS, Android, iOS
Built on an open protocol rather than one closed platform Lets users migrate their identity between providers	No phone number or email needed to sign up Built on the open Nostr protocol
Most users rely on the official hosted service rather than running their own infrastructure Ecosystem of alternative apps and providers is still maturing	You must keep your private key safe yourself Some extras require the paid Purple membership
Web application, Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account 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.