A new app, Gesture Calc has been added to the Marketplace. Gesture Calc is an experimental calculator app that uses gestures for operations like addition, subtraction, multiplication and division. The button layout is designed to have the phone held in portrait view with all the tapping done by your thumbs. This puts all the functions of a calculator in a smaller space, and the gestures make a the calculator more satisfying to use on a touch screen. Also, operation buttons do appear at the top of the screen if you prefer them to gestures. The app is free, and can be downloaded from the Windows Phone Marketplace.