I’ve been using TwitBird for iPhone ever since I registered for Twitter and felt the need to update from my iPhone. At the time, there was one version and it was free. Soon, they rolled out two other version: Premium ($1.99, ad-free, 2 accounts, PUSH capabilities) and Pro ($2.99,ad-free, 16 accounts, PUSH capabilities). I just updated to their most recent release Version 2.5 and love all that they’ve done with the app.
TwitBird in detail:
TwitBird has many settings that effect all accounts, including but not limited to: Auto Refreshing tweets, a theme to use throughout the app (currently they provide four themes), integration with third parties (Facebook, URL Shorteners, etc.), Image Compression, and clearing image cache.
Once you sign in with Twitter, you’ll have access to your account. You’ll be able to view your Home feed, tweets your were mentioned in, direct messages, your favorites, your tweets, and saved searches to name a few. You’ll be able to set up Push Notifications so DM’s and mentions push to your phone. You can access “Nearby Tweets” from users who are tweeting close to your location. You can search twitter and view your profile amongst other functions.