Twitter has changed. It's no longer the domain of nerds and conferences but now serves the mainstream, not to mention pop stars with tens of millions of followers. Twitter's official app has changed with it, altering the way everything from the timeline to direct messages work and are surfaced. It's not what it once was, and its certainly not for everyone. Luckily many really good Twitter app alternatives also call the App Store home. And that's a very good thing, because many people use Twitter very differently. For some, it's just a way to follow celebrities or keep up with news. For others, its a virtual water cooler to chat around during work breaks. For yet others, it's a network to expand their social connections and market their wares. Different apps suit different use-cases. So if you're only interested in the best iPhone apps where Twitter is concerned, these are the ones we'd recommend!