Does Sync cost money?

Excuse me, I'm just wondering, does using Sync come with any financial cost? I've been hearing a lot about it and how it can help manage multiple devices and files, but I'm hesitant to dive in without knowing if there's a subscription fee or any other hidden charges associated with it. Could you please clarify if there's a monetary investment required to utilize Sync, and if so, what are the various pricing options available? Thank you for your time.