Being a true pedant and browsing through the submissions, the competition is actually open to all software applications--such as those running on PCs. In the interest of fairness, perhaps the competition judges should factor in that laptop or desktop machines have more computing power. For instance, iPhones iPod Touches, and iPads do not quite match up to the iBook in hardware horsepower.
At any rate, it's certainly interesting to flip through the submissions. Since my particular interest is migration, for example, there's an interesting app which geographically displays from where workers' remittances come from and go to internationally.
Check them out and vote! My only qualm is that we can't actually download and try out these apps and must rely on the concept and video clips to form our minds.