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Farcaster vs Mastodon: catalog facts
Farcaster	Mastodon
Free No price is listed for signing up or using the app.	Free Free and open source under the AGPL. Hosting is separate.
Android, iOS, Web	Android, Web, Self-hosted
Identity is owned by the user rather than the app Web, iOS and Android apps	Chronological timelines with no engagement ranking Federated, so moving servers does not mean losing your network
Signing up requires an email address or phone number Smaller audience than mainstream social networks	Your experience depends heavily on which server you join Running a server has real moderation and maintenance cost
Downloadable app, Web application	Self-hosted, Web application
Closed source	Open source
License not stated	License: AGPL-3.0
Account 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 23, 2026	Official website Full listing and sources Checked September 22, 2026

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