WordPress for PlayBook and BlackBerry 10 is available in the App World here: http://appworld.blackberry.com/webstore/content/78913.
WordPress for BlackBerry 7 or lower is available in the App World here: http://appworld.blackberry.com/webstore/content/5802.
For those who could not download using Appworld the easiest way is to point your mobile browser at the “Over-The-Air” installation link:
To determine your BlackBerry OS go to Options > About. The Device Software version will be the first set of numbers on the third line.
Users running BlackBerry OS v4.2.1, or BlackBerry OS v4.3, can still download WordPress for BlackBerry 1.2.1, available here. We strongly encourage you to upgrade your OS to the BlackBerry OS4.5, available for download from RIM website.