Ipad

No.

If you purchase a cellular model and want to use cellular instead of wi-fi to connect to the internet you will need a cellular plan and your cellular provider will charge for that.

You can also install apps that may charge a monthly fee.

No monthly fee for the iPad itself. But There will be a fee from the cellular carrier is you buy an iPad with cellular ability. And various apps charge their own fees.

Sorry Carol, a bit slow this morning.

No problem. 🙂