What's the difference between the iOS WeatherPro Lite, WeatherPro and WeatherPro for iPad apps?

1. The WeatherPro Lite iPhone app is a basic, free-to-use, everyday weather experience supported by advertising.
   
   
   
   
2. The WeatherPro iPhone app is a more premium weather experience that requires an initial app purchase.  There is the option for an additional in-app subscription that unlocks the full capabilities of the app (eg. all map layers, graph types, push notifications).
   
   
   
   
3. The WeatherPro for iPad app is similar to the WeatherPro premium app, but with an optimised layout to suit the larger tablet screen format. It requires an initial app purchase and also has the option for an additional in-app subscription to unlock all features.