What are the differences between different versions of Angry Birds Space? I own both an Android phone and a tablet and I am trying to figure out what the differences are between these Angry Birds Space versions:


Angry Birds Space
Angry Birds Space Premium
Angry Birds Space HD


One is free and the other two are paid apps, but looking at the description they seem to have the same content and features. Can someone clarify the differences?
Both premium and HD are ad-free and the latter is for tablets.