Confirmation app on iPhone URL Scheme

Hey developpers, I need to ask a confirmation on the iPhone URL Scheme. Is the URL Scheme 'Tweetie' the Official Twitter application? I know in the website it said that there were Twitterriffic / Twitterriffic Premium, Twittelator Pro and Tweetie but for Tweetie, it's unsual to me the way it's said. It's like it's a built iPhone app (not the Official Twitt开发者_如何学JAVAer iPhone application), but after searching for Tweetie on the app store, it appears there is no such app called 'Tweetie', so I just need to know from someone if this is the Official Twitter app. So hope someone can help me out, thanks

Yep, that is the official Twitter app.