According to 148Apps.biz, Apple’s U.S. App Store passed the quarter million milestone, two years and 50 days after it opened.

The stores features 251,007 applications from 50,304 publishers available for download for the iPhone, iPad or iPod touch.

The largest category being books (with 17%), follow by games games (14%) and entertainment (11%).

Approximately 70% of the offerings on Apple’s store are paid apps vs 35% for th Google’ Android.