to use Authy app instead of Google Authenticator

I am using several trading sites like Coinbase, Poloniex and Bittrex etc. and had set up 2FA(Two Factor Authentication) for the security.
Some of them were through Google Authenticator and some were with Authy app.

But recently, I realized Authy app might be better than Google Authenticator.

Suppose you lost your phone or connect a new phone...
Google Authenticator does not have any back-up option, but Authy app has.

So, I changed all 2FA at trading sites from Google Authenticator to Authy.
(Never forget your Authy backup passward!)