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Duo Mobile vs Authy: catalog facts
Duo Mobile	Authy
Free The app is free. The Duo service behind it is a paid product for organisations.	Free Free to use for consumers.
Android, iOS	Android, iOS
Verified Push defeats the push-fatigue attacks that plague plain approvals Also works as an ordinary TOTP authenticator for other accounts	Encrypted backup and multi-device sync, which many authenticators lack
Built around a Duo deployment that an organisation pays for Closed source	Desktop applications were retired; only mobile is supported Account recovery is tied to a phone number, which is a known attack surface
Downloadable app	Downloadable app
Closed 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	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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