Many of you will remember when the App Store passed the 1 Billion download mark. Now, as it seems, the pace is heating up. Apple announced that 15 Billion apps have been downloaded in total from the App Store as of this morning. There are also 425,000 total apps and paid apps have brought in $2.5 Billion for the developers that have made them. Apple is also showing off that they are the king of apps in the tablet world with an amazing 100,000 available for download this instant.