Looking for a windscreen defrost trigger

Can someone give me a push in the right direction according to get a decent trigger for defrosting my windshield?

I’m using the app buienradar on my iOS device it has the function to give me a notification when the windshield is frozen. It’s under notifications called krabmelding.

What I try to accomplish is that when my windshield has a high chance of being frozen, start pre heating my car.

Instead of reading the notification and start preheat manually from my car app.

I hope someone has a great :bulb: