I had been using the free version for a while, but have now upgraded to the pro version. Well worth it for the reasons below:
Your Facebook app should work for you. It should be light, functional and beautiful. It should look how you want it to. Be accessible everywhere, with lightning fast launch speeds. Metal Pro does this. And more.
And now it supports Twitter, too. Two social networks, one tiny app.
Metal Pro is a Web wrapper with some awesome enhancements you don’t get from just a browser like Notifications, Floating windows and Themes.