If you use the Facebook IM messaging function, download this app. It will help you message your friends on Facebook with a greater efficiency then ever, right on your mobile device running Apple’s iOS. It will work on the iPhone, iPad, and even your iPod. And of coarse it’s free!
Instantly reach the people you care about.
Messenger is a fast, free and reliable way to stay in touch. It’s just like texting, but you don’t have to pay for every message (it works with your data plan).