Does a client need a paid seat to approve posts?
SHORT ANSWER
Not always; it depends on the tool. Some tools require every approver to be a paid user. Others let clients approve from a review page or a reviewer role at no extra cost.
What to check
Look at whether approvers count toward your seat limit and which plan includes approval workflows.
In Flomixy
Clients approve from a review page without taking a paid seat, and team seats are unlimited.