iDisplay

From the developer of IM+. Turn your iPad/iPhone into convenient extension of your Mac or Windows desktop monitor. Increase productivity by maximizing the viewable area of your main monitor! Ideal for multi-tasking users, iDisplay lets you free the main monitor for work-related applications by moving some apps to the external display, shown on your iPad or iPhone. iDisplay can be used for IM, Twitter, weather gadgets, news gadgets, and other tools. ?iDisplay app turns your iPad or iPhone into secondary screen