I was really looking forward to this app before it was released. However, it suffers from a lack of functionality. It's beautiful. Simple and elegant. Now, I am not one of those people that frequently desires more functionality from apps. Quite the opposite really. I think there was something lost in trying to make a Dieter Rams'esk app. When there is only two switches in the app, why would one of them have the function of  switching between Fahrenheit to Celsius. There isn't a really valid use case for this design decision.