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Step Two vs 2FAS: catalog facts
Step Two	2FAS
Paid Sold through the App Store and Mac App Store and included in the Setapp subscription.	Free Free and open source. Some components are source-available.
macOS, iOS, Browser extension	Android, iOS, Browser extension
iCloud backup and sync across Apple devices Apple Watch app and Safari extension	Browser extension approves codes on the phone instead of typing them Encrypted backups to your own iCloud or Google Drive account
Apple platforms only Sync depends on iCloud	Mobile-first; there is no standalone desktop app Push approval needs the browser extension installed on each machine
Downloadable app, Browser extension	Downloadable app, Browser extension
Closed source	Open source
License not stated	License not stated
Not stated if an account is 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 24, 2026	Official website Full listing and sources Checked September 22, 2026

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