Tweetbot by is one of the most powerful — and popular — twitter apps on iPhone, iPad, and Mac. Tweetbot combines all the usual timeline, mention, direct message, favorites, and list functionality with terrific push notification support and mute filters that simply can't be beat.
Tweetbot for iPhone and iPad is developed by Paul Haddad and Mark Jardine of Tapbots. Tweetbot for Mac is developed by Todd Thomas. While Tweetbot for iPhone has been updated with an iOS 7 redesign, the iPad's is still pending.