Tweetbot, is in my view, and that of others the best Twitter client on the market. I’m including it under Software and not Utilities as really that’s what it is. It’s fabulous software.
Tweetbot runs, in sync, on your iPhone (version IOS 7), iPad and Mac. It is incredibly flexible and feature rich with fully intuitive capabilities. The only other software that would compete with Tweetbot is Twitterific. Personally, I don’t feel it holds a candle on Tweetbot. If you use Twitter a fair bit then you absolutely deserve if not need Tweetbot. Even if you‘re a casual user of Twitter I’d still say Tweetbot is for you just based on it’s ease of use yet capability. Do yourself a favour; if you don’t already use Tweetbot get it as it’s excellent.