If you want to find out what’s trending on Twitter and why they are trending on your iPhone, there’s an app for you. Known as iTrends, it’s a simple and easy-to-use iPhone app that lets you discover what is the latest trending topic on the micro-blogging service and why is it exactly trending.
Other features includes searching for topics of users, save favorite topics or users to track later, save up to 10 tweet topics and 10 twitter users, and even Google the trending topics or check the news sites.
You can download the free iTrends iPhone App from the AppStore here.