Calc4M Calc4M is a calculator for mobile phones. It is configurable and contains most of the normal functions such as trigonometric and logarithmic functions, conversions, constants, memories and binary and hexadecimal notation
Javia Calculator Javia Calculator - easy-to-use calculator for mobile phones. It features a user interface designed for the mobile phone's keypad, which allows quick input of mathematical expressions.
Built-in functions include trigonometric and hyperbolic functions, logarithms and exponentiation, permutations, combinations and factorial
Trigonometr Calculator for trigonometric functions and inverse trigonometric functions
TouchMaths_ME The program TouchMaths (for touchscreen mobile phones) contain a set of revolutionary mathematical applications (Professional Calculator, Graph 2D, Function solver, Integral solver, Equation solver and Linear system solver)
Solve2Go Solve2Go - supports solving equations and inequalities by means of conjectures based on visual thinking. Conjectures can be refuted or supported by examples provided by the tool, and should be proved using symbolic manipulations on paper.
Equations: when we want to know for which values of x the two functions are equal