Duo Authenticator
Duo Security's two-factor authentication service to make logins more secure. The application generates passcodes for login and can receive push notifications for easy, one-tap authentication.

Duo Mobile Download Links
Duo Mobile - Download Links 

 Android:  https://play.google.com/store/apps/details?id=com.duosecurity.duomobile&hl=en_US 

 

 iOS: https://apps.apple.com/us/app/duo-mobile/id422663827