The hardware is good quality and seems to work well. The app also looks to do all the essentials (plus a load of very non-essentials). However I couldn't recommend this to anyone who is doing their own installation because the process is complicated and the instructions are dire. I'm quite tech-savvy and it took me hours and I had to revert to an installation guide written by a plumber (thank you JR Plumbing & Heating). So good and bad.
Compact and easy to use. Its small size allows me to hide it from the in-laws who like to think they can control the temperature in our house when they visit. Not any more suckers 😂