Facebook's skunkworks division - the NPE Team (New Product Experimental) - has launched a new social app called CatchUp. It's an advanced voice call app that borrows some features from Messenger and adapts them to suit its needs. Once you download the app (only for iOS at the moment), you can see all your contacts, including people who also have downloaded CatchUp.

You can then create groups, see who's ready for a call, poke offline friends. There are some advanced features like one-on-one calls, dedicated groups, and users' current status (muted, dialing, online, etc.). Some of these features ...