App coolness is not a function of the number of devices it runs on.<p>a) people probably buy iPhones <i>because</i> of specific cool apps that are available on it (similar to the battle between the 3 game consoles)<p>b) an iPhone user doesn't care whether the cool app they love run on a Crackberry. I suspect Android users also don't care if an app they love doesn't work on an iPhone.