Another milestone has happened. Apple has successfully crossed over the 50 billion app download mark. The number was reached around 4:55pm and Apple will give a $10,000 gift card to the person who downloaded the 50 billionth app (still waiting to see who that is).
The Apple App Store was officially launched on July 10th, 2008 and reached 1 billion downloads in 9 months (April 23rd, 2009), then passed over the 5 billion download mark on June 23rd, 2010. The 10 billion app downloads occurred 6 months later on January 22nd, 2011. The massive 25 billion app download milestone was achieved on March 3rd, 2012.
Update: The 50 billionth app was Say the Same Thing, which was downloaded by Brandon Ashmore from Mentor, Ohio.