Metro Apps

Metro apps are touch-screen-friendlyapps written especially for Microsoft'sSurface line of tablet computers.
Metro apps are available from the Windows store for use on any computer that runs Windows RT or Windows 8. The apps will work not only on tablet devices, but also on any desktop or notebook computer that uses a keyboard and mouse, provided that the correct OS(operating system) is installed. Microsoft plans to introduce Metro apps to support communications, scheduling, news, weather, sports, financial information, music, videos, books, travel, and other popular consumer activities. In addition, there will be an app for cloud storage.
The original designers of Metro apps based their approach on a perceived consumer demand for apps that are engaging, immersive, interactive, touch-based, and usable in multiple form factors. They are built for a tiled UI (user interface) with limited, intuitive, functional graphics. Metro apps are based on the Metro design language, originally conceived for mobile Internet devices (MID) and smartphones.