There are a number of Twitter apps available for the iPhone and iPod Touch -- and why not? Much like peanut butter and jelly, Twitter and the iPhone are a classic combination. Tweetsville [iTunes Link] from Tapulous is the newest Twitter client available from the App Store, and it offers up an interface and feature set that really gives the competition a run for its money.
But wait, doesn't Tapulous already make a Twitter application? They do, and Twinkle [iTunes Link] is a neat app. Although the two applications share some interface similarities, the scope and focus are actually very different. Twinkle's real user hook is in its geo-location features, whereas Tweetsville is a full-fledged Twitter application.
I'm a pretty addicted to Twitter, and have been searching for an app for my iPod touch that could help me monitor and manage my stream with ease. Tweetsville appears to be that app. I follow a lot of users and my biggest problem with some of the other Twitter applications (and with the m.twitter.com interface) is that I can't view a large number of tweets at one time. With Tweetsville, not only does it grab the last 200 tweets for me, if I leave the application and come back an hour later, it will pull up what I've missed. That means I can access 532 tweets at once, rather than just the last ten minutes or so. That's extremely handy.