 On March 6, 2008, Apple held a press event, announcing the iPhone SDK.The iOS App Store was opened on July 10, 2008 with an initial 500 applications available.This quickly grew to 3,000 in September 2008, 15,000 in January 2009, 50,000 in June 2009, 100,000 in November 2009, 250,000 in August 2010, 650,000 in July 2012, 1 million in October 2013, 2 million in June 2016, and 2.2 million in January 2017. , 1 million apps are natively compatible with the iPad tablet computer.