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2FAS vs Google Authenticator: catalog facts
2FAS	Google Authenticator
Free Free and open source. Some components are source-available.	Free Free to download and use.
Android, iOS, Browser extension	Android, iOS
Browser extension approves codes on the phone instead of typing them Encrypted backups to your own iCloud or Google Drive account	Generates codes without a network connection Optional sync of codes across devices via a Google Account
Mobile-first; there is no standalone desktop app Push approval needs the browser extension installed on each machine	Cloud sync ties your codes to a Google Account Not open source
Downloadable app, Browser extension	Downloadable app
Open source	Closed 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	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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