Below are the applications that have been tested and will work with MFA at Delaware Tech:
2FA Authenticator (2FAS) APKs – APKMirror
This one was very easy to use, it did not require anything but scanning the QR code on the Microsoft sign in security page. It was free
This one worked as well but you are required to provide a phone number, an email and scan the QR code to use. It was also free