Originally gave this app/product a low rating...
While I loved the concept/idea, I was having some serious issues with valves coming on when they were not supposed to and flooding parts of a pasture or my riding arena. The contractor I had do the install contacted the local rep for the company, and we first talked about the issues on a conference call, and then the rep visited my property to check the set up and confirm that the app/controllers were doing their part of the watering task correctly. After confirming they were, we isolated the issue to be either solenoid or valve issues with the problem zones. Seriously good customer service and willingness to stand behind their products and make sure things were working as they should.