In just under two weeks since first announcing they were approaching the milestone, the Apple App Store has officially ticked over its 50 billionth download. Coincidentally the milestone was reached during the first few hours of Google I/O, where Google themselves were shouting about their own download numbers. In reaching 50 billion, that now means one lucky iOS user is set to receive a $10,000 App Store gift card, with 50 billion and one through to 50 each receiving $500 vouchers.