One person familiar with the matter said Apple has put significant resources into designing and programming the device so that it is intuitive to share.

WSJ: With Tablet, Apple Sees New Money in Old Media

The biggest portion--nearly 45%--goes toward simply programming and designing the game itself.

FORBES: Magazine Article

When not helping seniors to rest easy or designing Lego robots, Summer and Catherine both enjoy computer programming and rock climbing.

WHITEHOUSE: The White House