Connecting a flow meter

Hi there Rachio community.
I will be using a Rachio 3 controller, and I want to install a water flow meter. I can see a list of compatible wired flow meters here:

OR:
A wireless flow meter (Rachio Wireless Flow Meter Tech Specs).
Do I need any monthly subscription and/or any monthly fee to use these flow meters?
Thanks!

There is no fee for using flow meters.

:cheers: