 Trigonometr Calculator for trigonometric functions and inverse trigonometric functions   Scientific calculator(touch) The image that i put as preview is not the real software. The real software is moooooore useful!!   Frink Frink  Frink is a programming language and calculating tool designed to help you make realworld calculations.
Frink is different than other calculating tools in that it tracks units of measure through all calculations. Thus, you can add feet and meters, multiply by grams, divide by pounds, and Frink does the right thing through all calculations   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   NumBasis NumBasis is a basis tool converter for integer numbers written in any of the main numeration systems (decimal,binary,octal,hexadecimal).It supports large number formats(5digits hexa,7digits dec) and fast calculation 

 Scientific Calculator Casio FX602P for Scientific Calculator Casio FX602P for   UPNCalc UPNCalc is a RPN (Reverse Polish Notation) calculator for mobile phones.
· Arbitrary precision unnormalized BCD arithmetic.
· Arithmetic standard functions (approximated to arbitrary precision): sin, cos, tan, arcsin, arccos, arctan, 1/x, sqrt(x), exp(x), ln(x), y^x.
· Angle measure in DEG, RAD or GRAD   Calc4M Calc4M is a calculator for mobile phones   CALCULATOR FOR S60 THIS IS A CALCULATOR FOR S60   Scientific Calculator 1.0 for S60v5/S^3/Anna/Belle QuickElecKenya SCIENTIFIC CALCULATOR v1 
