I like the thermostat overall; however, it loses connection with my wifi a few times each day. This started happening about a month after it was installed. Sometimes, it will reconnect by itself; other times I have to go into my router to reconnect it to my wifi network. Oh, and my router is about 4 feet from the thermostat with no walls in between. Otherwise, I like the readability of the screen, and it seems to run my system accurately when comparing temperature readings to those of thermometers I have in the house.
I really do like the thermostat and the only enhancement I may suggest, which was available on other models I've had previously, is an ability for the app to provide a usage report from the thermostat. Otherwise, I like it and have no complaints.