When Twitter has announced acquisition of TweetDeck they had stopped development of Adobe Air version of TweetDeck for desktop and released their own desktop app, but their is still a work around which allows you to use Adobe Air version.
But now Twitter has announced that they will shut down TweetDeck mobile apps for Android and iPhone. Official Twitter apps will continue to work fine. Twitter has also anounced that they will pull dwn facebok integration from TweetDeck app.
TweetDeck mobile and Air app rely on Twitters old API v1.0 which will stop working from this month. Twitter wants to users to use Chrome TweetDeck version as they provide best experience. TweetDeck apps from Android and iOS apps store will be removed very son.