Calculator HD is the best calculator for your iPad. It provides all scientific and arithmetic functions. All operations like factorial, exponential, divisions, root, power and logarithm are supported. Including trigonometric functions like sin, arcsin, cos, arches, tangent, and more. The expression view allows you to keep track of the calculations and the history overview shows your past calculations. Advanced features like the scientific calculator are just a swipe away. You will never lose track of your numbers anymore. Features: - Scientific and Basic calculator in Landscape and Portrait mode. - Advanced functions accessible with a Swipe to the left or right - History Tape - Expression History, live as you type! - Retina Display Support - Radial and Degrees - Swipe to edit/remove mistakes - Fast App Switching - Advanced Multi-Tasking support so you will never lose your calculations while changing to another application. Calculator HD has the fastest launch possible so you will have access to your calculator within seconds!