You can use modes, they have the ability to pause and resume apps, but the app must support it. For example if you’re using the 5-2 Day Thermostat app (or any of the other thermostat apps from rboy apps), they have a feature called Operating Modes. You can set them to only operate in Home mode and then change modes when you lock from outside to Away and then back to Home when you unlock from outside. This way you can pause and resume the thermostat app.