Item itself has been fine. Setup was somewhat of a challenge with my android. Had to use my daughters iphone to complete setup then delete app from her phone as she did not need it and was able to control it from app on my android (Galaxy 8)
The thermostat did not work and was replaced by the contractor. The set up was not easy, but we got it working. A few days later it would not link into the server. I finally replaced it with an Echobee thermostat and it works great.
The thermostat and application are very easy to use. And is compatible with Siri on the iPhone. You can set it up for manual changes, scheduled changes or a geofence that will make changes based on your distance from your home.
Although we have not received our electric bill, I believe the new thermostat will save us energy and money. The ability to program our heating and cooling, coupled with the smart technology is great.