Its not the app, its the thermostat itself. It came with my geothermal heat pump, but keeps trying to use auxiliary heat. I had to turn off the auxiliary circuit breaker to stop wasting electricity. Still keeps using 2nd stage heat pump for minor temperature changes. Going to wear out the heat pump at this rate. Also, i gave up on learning mode, because it kept trying to outsmart us and turning the heat down. We normally keep the heat at 63 day and 58 night. We dont need it lower than that. I