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2FAS vs Conceal Authenticator: catalog facts
2FAS	Conceal Authenticator
Free Free and open source. Some components are source-available.	Free Free and open source.
Android, iOS, Browser extension	Android
Browser extension approves codes on the phone instead of typing them Encrypted backups to your own iCloud or Google Drive account	Supports SHA1, SHA256 and SHA512 TOTP variants Optional encrypted backup restorable from a seed phrase
Mobile-first; there is no standalone desktop app Push approval needs the browser extension installed on each machine	Blockchain backup depends on the Conceal Network cryptocurrency ecosystem Losing the recovery seed phrase means losing the backup
Downloadable app, Browser extension	Downloadable app
Open source	Open source
License not stated	License: BSD-3-Clause
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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