The number of apps approved for Apple’s iOS platform has exceeded 500,000 apps according to data collected by app discovery service 148apps, mobile gaming company, Chillingo and San Francisco-based app discovery company, Chomp. Currently, the Apple App Store has 400,000 apps available for download. Nearly 36 percent of all apps are free. Average paid app costs $3.64 per app. It would cost $891,982.24 to download all apps.