Does Coinbase charge a monthly fee?

I'm curious about the fees associated with using Coinbase, a popular cryptocurrency exchange platform. Specifically, I'm wondering if there's a monthly fee that users have to pay just for having an account with them. It's important for me to understand all the costs involved before deciding to use a particular service, so I'm hoping you can clarify whether or not Coinbase imposes a monthly charge on its users. If they do, I'd like to know what that fee is and if there are any ways to avoid or reduce it. On the other hand, if Coinbase doesn't have a monthly fee, I'd be interested in hearing about any other fees that may be associated with using their platform.