Halcyon Touch Software today announces Halcyon Calc Lite for iOS devices. Halcyon Calc Lite is an advanced RPN calculator with complex number and symbolic expression support. With over 190 built-in operations, these functions can be combined into expressions and plotted in an X/Y coordinate space. It is ideal for students, engineers and scientists. Cut, copy and paste is supported. X/Y plots are directly manipulated through pinch to zoom and panning gestures, and much more.