Yeah. Had ours for a few years now. Works well, only changed the battery once. I ask google what is the temp and change the temp. I am happy with it. Use it along side energenie mihome radiator stats.
Have been using this for about 2 1/2 years I have a wall timer which controls hot water and heating. I replaced the thermostat with the netatmo. Set the heating timer to "on all the time" and the netatmo then takes over control of the heating. - The wall timer still controls the hot water!!!!! Very easy to use with the app on my iphone Also works with alexa or google mini The unit learns about how quickly your house heats up, so if you want to wake up at 6:47 with a room temperature of 20.5 then it will learn about what time it should turn on your heating (allowing for the outside weather temp) to ensure that the house is that temperature when you wake up. You also get a free email each month which shows how much energy you have used this month and compares this to last month. The only downside is that the app is easy to use, so that my non-tech savvy wife has learnt how to turn the heating up
Keep an eye on Cex, Ive had 2 from there as have 2 zones in the house and they both arrived brand new never opened for less than £50 each If you already have a thermostat it is just switching a couple of wires. Only thing I found is the thermostat is slightly smaller than a single light switch so had to improvise a bit to get snug to the wall (unless you use the surround it comes with but the missus wasn't a fan of that) Had them in a year without a hitch, as others have said maybe not as flash as a hive or nest but does pretty much the same and also works with smartthings if you have that
I also have this and wired it myself. Was easy. I also have the valves all over the house except the toilet. It's a great system.