The official Twitter app for iPhone's been pissing everyone off since the introduction of the Dickbar. Even though it's since been removed, there's a general wariness around the app—so it's not surprising people are flocking to Tweebot, which just launched today.
There's just one small issue—it costs. $2 to be precise. Though from what we're hearing, that's not been too much of a problem for the developers, with users lapping it up thanks to its slick UI; use of gestures; multiple timelines (thanks to Twitter Lists) and the ability to save drafts.