Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
andOTP - andOTP is a two-factor authentication App for Android 4.4+
Wondershare PDFelement - All-in-one PDF editor
Microsoft Authenticator - One app to quickly and securely verify your identity online, for all of your accounts.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.