Twitter apps, or any social networking app for that matter, is scarce or non-existent on the BlackBerry PlayBook. We did see Tweedless, however, it has been pulled so the developers could re-package it once they’ve tested it on actual hardware and not just in the PlayBook simulator. There is now another option called Tweetolio.
Tweetolio has a relatively nice clean UI, access to DMs, easy to read text, syncs with DropBox for storing bookmarks, automatically converts URLs into Bit.ly links, and it even lets you edit your ReTweets. If the keyboard doesn’t load up for you when you go to write anything, make sure to swipe up from the left corner to pull up the keyboard.