Well holy crap. Exactly 287 days after the iTunes App Store opened its virtual doors and made its first sale, Apple has served up its billionth App Store download.

The one billionth app, Bump created by Bump Technologies, was downloaded by Connor Mulcahey, age 13, of Weston, CT. As the grand prize winner of Apple’s one billion app countdown contest, Connor will receive a 17-inch MacBook Pro, a 32GB iPod touch, a $10,000 iTunes gift card and a Time Capsule.

“The revolutionary App Store has been a phenomenal hit with iPhone and iPod touch users around the world, and we’d like to thank our customers and developers for helping us achieve the astonishing milestone of one billion apps downloaded,” said Philip Schiller, Apple’s senior vice president of Worldwide Product Marketing. “In nine months, the App Store has completely revolutionized the mobile industry and this is only the beginning.”