Room temperature, hot water and where the heat is going, in one app. It reads your system every ten seconds and it never writes anything back to it.
iOS, in testing. There's no public download yet.
The app keeps its own record, so you can see what the system used and what it saved without waiting for a bill.
What your system used, and what it saved against a conventional setup, day by day and month by month.
There's no path from the app to the machine. The system runs itself and the app watches. A stolen phone can't change how your home is heated.
A channel with nothing plugged into it says so, and a part that did not answer says that instead. An old reading fades rather than passing itself off as a current one, so you are never looking at yesterday and thinking it is now.
Losing contact with a machine is not the same as the machine failing. The app separates the two, because only one of them needs somebody to go and look.
These are real screens from the app, shown with example data for a home like yours. The system is still in prototype, so we have not photographed a customer installation yet.