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Whalebird vs Ivory: catalog facts
Whalebird	Ivory
Free Free software with no advertising, supported by GitHub Sponsors donations.	Paid Paid app with a free 7-day trial.
Windows, macOS, Linux	macOS, iOS
Works with Mastodon, Pleroma, Friendica, Firefish, GoToSocial and Pixelfed Multiple accounts with streaming timelines	Timeline position syncs across devices Native design for iPhone, iPad and Mac
Single-column layout only; multi-column needs the separate Fedistar app Desktop only, with no mobile version	Apple platforms only Paid after the trial
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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