I have no clue why one would want to use Authy over plain TOTP (as implemented by Google Authenticator, for example). Or, if Authy also relies on TOTP, why make

I have no clue why one would want to use Authy over plain TOTP (as implemented by Google Authenticator, for example). Or, if Authy also relies on TOTP, why make a big thing out of it?