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Iris vs Farcaster: catalog facts
Iris	Farcaster
Free The research shows no pricing for using the web client.	Free No price is listed for signing up or using the app.
Web	Android, iOS, Web
Runs in the browser with nothing to install Relay list you can edit, with discovered relays	Identity is owned by the user rather than the app Web, iOS and Android apps
Content and reach depend on the relays you connect to Nostr has a smaller audience than mainstream networks	Signing up requires an email address or phone number Smaller audience than mainstream social networks
Web application	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account 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 23, 2026

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