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Duo Mobile vs Microsoft Authenticator: catalog facts
Duo Mobile	Microsoft Authenticator
Free The app is free. The Duo service behind it is a paid product for organisations.	Free Free app from Microsoft for Android and iOS.
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	Passwordless sign-in for Microsoft and work accounts Commonly required by employers using Microsoft sign-in
Built around a Duo deployment that an organisation pays for Closed source	Mobile only, with no desktop app Most useful inside the Microsoft account ecosystem
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 23, 2026

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