The search for a perfect Twitter client on the iPhone seems to be never-ending, that is until now. Tweetie, a popular new Twitter application for the iPhone, brings a set of new functionality to the iPhone for true Twitter fanatics.

Like most twitter clients, Tweetie allows you to see the recent tweets from those whom you follow, as well as post directly to Twitter. Also, you can snap photos that are uploaded to Twitpic.com and inserted as a link into your tweet. When viewing tweets, swiping your finger to the left or right opens up an array of utilities such as “re-tweeting”, adding a tweet to your favorites, as well as seeing more information about the user who posted it. Also, when opening links, the ability to send webpages to the Instapaper service is built in to the browser.

Tweetie also has an entire section for viewing “@ replies” addressed to you. There’s also a section for viewing and sending direct messages, and a tab for eyeing and editing favorite tweets.

The final tab, entitled “More”, is what separates Tweetie from the crowd. Here, you can perform a Twitter search and see the latest trends, as you would on Search.twitter.com (formerly Summize). Tweetie also allows you to save searches, and go directly to a user’s profile. Under the “More” section, it’s also possible to see all the tweets posted near you, similar to the Twitter client Twinkle. Through Tweetie, it’s also possible to view and see all of your followers, as well as those who follow you.

Some other nifty features in Tweetie include the ability to view and post from multiple twitter clients, as well as changing the theme and view of which you access your tweets. The multiple accounts feature is nice, but the themes could be improved. Unlike Twitterific (another iPhone twitter app), Tweetie’s interface isn’t very slick. While functional, and useful, the interface doesn’t knock me down with its brilliance. One of the built in themes will make your tweets tab look more like an iChat conversation, with colorful chat bubbles.

Overall, the experience when using Tweetie has been phenomenal. The amount of added functionality makes the app well worth its $2.99 price tag, if you use Twitter.