15C Pro Scientific Calculator is a high-end scientific programmable calculator for iPhone and iPod touch. Developed by Vicinno Soft LLC, this calculator is a faithful emulation of the renowned HP 15C Scientific Calculator. With identical mathematics and algorithms, it offers the same capabilities and even better performance.

This calculator supports complex numbers, intense calculations, matrix operations, and many other advanced features. It can perform numerical integration, solve the roots of equations, and handle complex number and matrix calculations. It also includes hyperbolic and inverse hyperbolic trig functions, probability calculations, factorial, percent change, absolute value, and a random number generator.

The program is designed with a user-friendly interface and offers additional options such as disabling/enabling key click feedback sound and programmability. It also automatically saves and restores settings during app close/start. The menu key provides access to more options.