Facebook app update adds free VOIP calls in US and Canada

Facebook just dropped an update to its app in the App Store that allows US and Canadian users to make free VOIP calls to their Facebook friends. The VOIP feature makes its debut after a similar feature was enabled in Facebook's Messenger app in January. International users of the app shouldn't feel entirely left out, either. The update also brings new buttons designs that make it easier to Like, comment, and share posts.

Here's a rundown of the new features, according to Facebook:

• New button design makes it easy to like, comment and share posts in News Feed.
• Improved buttons to like, comment and share posts.
• Share button to re-post stories from your News Feed now available in all languages.
• Call friends for free right from Facebook (US and Canada).
• Free calling uses your existing data plan.

Facebook is a free download.