Authy is the best 2FA code generator

If you use two-factor authentication on any of your accounts, as you should, do check out Authy. It can generate 6/7 digit codes for your accounts, just like Google and Microsoft Authenticator, but it goes one step further by encrypting your account details with a passphrase and syncing them across multiple devices.
Source: Authy

2FA was a major pain when I used Google Authenticator, as I would frequently test new ROMs on my phone and end up having to my re-add 2FA accounts over and over again. Authy solves that problem entirely.