The app works great for a couple days then it fails to open. I get a blank screen. I removed the ap and reloaded and after considerable reconfiguration I got it to work. But after a couple days it failed again and I got a blank screen. Not impressed.
Fairy good thermostat, however it loses wifi connection from time to time. Sometimes there's WiFi connection, but it won't recognize my phone. This is a bit unconvincing but it is sporadic.
The app frequently disconnects. I paired it successfully but then it disconnected and when I tried to repair, it was not accepting. Then it would, and redisconnect. I deleted the app and reinstalled only to have it disconnected again. It’s too unpredictable. I’ll stick to manual control