Geofencing for Nest

I have using this app for almost a year now.
The app is also on my wife and childrens iPhones and it works really well.
As soon as I am a mile or so from my home, I get notified that the Nest is set to "away" mode. As I approach my home, the Furnace has already fired up and began warming up the house.

Karo Taro about QuickControl: For Nest