BlackBerry World (previously BlackBerry App World) is an application distribution service and application by BlackBerry Ltd for a majority of BlackBerry devices. The service provides BlackBerry users with an environment to browse, download and update third-party applications. The service went live on April 1, 2009. Of the three major app stores of different operating systems, it has the largest revenue per app at $9,166.67 compared to $6,480.00 and $1,200.00 by the Apple App Store and Google Play, respectively. On 21 January 2013, BlackBerry announced that it rebranded the BlackBerry App World to simpler BlackBerry World as part of the release of the BlackBerry 10 operating system. The BlackBerry Priv, the newest BlackBerry phone which runs Android, uses the Google Play Store.