Apple's (Nasdaq: AAPL) App Store now holds more than a quarter-million apps for download. More than 50,000 publishers are submitting more than 600 new apps every day.

At the time of this writing, there were 252,227 active apps available in Apple's App Store, according to 148apps.biz. The total number of apps, including apps that are no longer available, stands at a stunning 301,923.

148apps.biz says that 17,424 apps have been submitted to the App Store this month alone and Apple typically approves apps with a delay of 6.8 days. The average app price is $2.91, the most popular category is books (43,759 apps), followed by games (36,646). According to 148apps.biz, there are currently 50,545 active publishers in the App Store.

The App Store opened on July 10, 2008, via an update to iTunes. One day later, the App Store held 500 apps, a number that grew to 10,000 by the end of that year. Fifty thousand was reached by mid-2009 and the 100,000 mark was crossed in early November 2009. By April 2009, more than 200,000 apps were available, and by June, more than 5 billion apps had been downloaded.

In comparison, Google's Android Market currently holds about 75,000 apps and more than 1 billion apps have been downloaded.

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