If you are using the latest BlackBerry OS 10.2.1 leaks you definitely want to jump on this one. Amazon is crediting users $5 for any download they make in the Amazon App Store. That means you can download the Amazon App Store on your BlackBerry 10.2.1 device and download any free app or game. Within an hour you should get a $5 credit to your account. You can then use that credit to buy an app from the Amazon App Store. Just keep in mind that not all apps work!