Heating without a 'thermostat'

Hi,

First time post - I’m looking for the simplest of heating controls, it goes like this.

Using an open\close sensor to record/measure the temperate.

If temp goes below 15 switch (relay connected to boiler) Heating on.
If temp goes below 15 Switch (relay) Heating off.
Obviously with variable temp range.

I had this operating with SmartRules up until the most recent update but now it simply fails to recognise any rules if have which spurred to to find an alternative.

Am i being stupid or searching in the wrong places, i thought it would be quite simple?

Many thanks.

Ok, I’ve found the old ‘it’s too cold’ app which switches the heating relay on fine but the ‘it’s too hot’ will only switch on another device, not switch the heating off - can I adapt the code in the latter to make it switch off instead of switch another thing on?

Thanks.

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