Terrible app
It is literally seconds between ‘button presses’ and a response to occur.
Often you tap the button to increase temperature, wait 2-4 seconds, then have to press it again, before it changes the temperature by one digit.
Other times you tap it a few times in a 3-5 second period - and 20 seconds later it applies every tap - long after you assumed it had not recognised the taps.
Terrible.