How do these things work then?
Do they take an internet weather forecast and then hope its right for where you live? Do you need gps switched on, on your phone too, or can it just work off the 3g?
Our boiler directly takes the air temperature from outside the house, which determines how hard it works, which I am guessing is going to be way more accurate?
Plus our existing Honeywell CM927 wireless stat has a leading function, and this cost us loads more money when we tried it.
Genuinely trying to see what advantage these 2 systems could bring me apart from internet control?