Tweetie 2 has an impressive feature set, including retweeting, image and video (3GS only) uploading and almost every built-in Twitter feature that is exposed by the API.
The real star of the show here, however, is the interface. It feels iPhone-native and intuitive while also introducing some innovative features such as the flick-to-reload mechanism. The app’s simplicity isn’t hampered by the sheer volume of functions and features — things are kept out of the way until and unless you want access to them.
I’m not a fan of the somewhat bland icon, but otherwise I can’t fault this beautiful little app.
You may be reluctant to pay for a Twitter app, even at £1.79 — but if you appreciate great UI, you really should consider it.