Updated: still one star. I just timed how slow the app is: 21 second on the loading screen before the app functions appear. Then, when you enter a change (e.g., heat on or off), it takes another 32 seconds to process that input. App used to work FINE--loaded quickly and processed changes immediately. But it's sooooo slow now. Just roll back the stupid updates and please make this usable again. I had been planning to get an Ecobee for our 2nd thermostat, but now? Not a freaking chance.