Halcyon Touch Software is proud to announce that Halcyon Calc version 4.0 is now available from the iOS App Store. Version 4.0 features operations to manipulate expressions in the new Algebra menu. Use COLCT to collect like terms and factors. Use EXPAN to distribute factors across terms and expand an expression. EXGET and OBGET allow you to retrieve information about an expression while EXSUB and OBSUB allow you to modify the expression.
Halcyon Calc is a full-featured RPN calculator for the iPhone, iPod Touch and iPad. Among the key features of Halcyon Calc are complex number support and the ability to enter, evaluate, plot and find the roots of expressions. The calculator provides over 225 operations including trigonometry and logarithm functions. With simple programming support, the calculator allows you to create your own operations which you can use with the other built-in operations in expressions. The user interface is unique and takes excellent advantage of a touch based interface to allow you to quickly scroll through the stack, copy and paste values from the stack and page through operations to manipulate values on that stack.
Halcyon Touch Software was founded in 2008 by Jeremy Rand with the goal of providing wonderful software for the iPhone, iPod Touch and iPad platforms.