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Google Authenticator vs Step Two: catalog facts
Google Authenticator	Step Two
Free Free to download and use.	Paid Sold through the App Store and Mac App Store and included in the Setapp subscription.
Android, iOS	macOS, iOS, Browser extension
Generates codes without a network connection Optional sync of codes across devices via a Google Account	iCloud backup and sync across Apple devices Apple Watch app and Safari extension
Cloud sync ties your codes to a Google Account Not open source	Apple platforms only Sync depends on iCloud
Downloadable app	Downloadable app, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
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 24, 2026

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