Yes, but not only that app as such, but I use several, in the worst case if one of them stops working I have the rest, or in the worst case I lose my phone and I do not have access to one of them. those applications, I have the rest that I can access from a new phone since they have a backup in the cloud and this is something that must be taken into account, since otherwise you will lose access to your accounts, apart from that it is something vital if You do not want any account to be hacked, especially the exchange or accounts where you have money, it is vital to maintain the security of what you use
How come you don't do it? YOU SHOULD, without it you are extremely exposed to being hacked into any account you have and if it is an account where you have money YOU WILL BE ROBBED! Basically it's like you left your car with the door open in a dangerous area. How long would your car last without it being stolen? Well, not having an authenticator is exactly the same, but if you think I'm exaggerating it's a matter of time until it happens to you.
It doesn't matter that you don't have a site, I'll give you an example, I suppose you have money in an exchange, in a bank account, etc. If you don't have the authenticator, anyone who steals your phone, or hacks you from the internet will be able to enter without problems and leaving without any money, unfortunately this is something that happens very frequently
