A former Nest users perspective: Pros Reliable Shows usage history per day and month. Easy controls Cons No darkmode No quick access to temp Does not say what times temp is changed like with nest. Opening app takes you to a main device menu. I find this frustrating as I only own one device and have to click an extra button just to be in the full thermostat home page. This is bad UI. Often takes a few seconds of saying it is not connected before it connects and you can see/ change temperature.