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RPN Scientific calculator emulating the voyager series (model 15) introduced thirty years ago. It employs mathematical computation as found in the original 80s calculators and comes with some unique features such as RPN stack visualization, RAM editing & backups, portrait view mode and fully customizable look and feel.

User Interface features:

– 39 keys in both portrait and landscape orientation
– 4 level RPN stack display (X, Y, Z and T)
– RAM editing and backup (swipe left on calculator display)
– customized keystroke behavior (click, glow, vibration on iphone)
– toggle mode for prefix keys
– customized look and feel, choose a modern flat look or more classic emboss look
– back label reference information display
– contextual help for calculator functions

Calculator features:

– RPN (Reverse Polish Notation) entry mode, programmable
– Functions are identical to those found in the 80s model e.g. trigonometric and hyperbolic functions, factorial, combinations, permutations, random numbers, linear regression, root solving, matrix calculations, numerical integration, complex numbers and more