 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   HorsePower HorsePower is J2ME scientific calculator optimised for use on mobile phones, with the appearance of the classic range of Hewlett Packard calculators (MIDP 1.0 and CLDC 1.0)   Calculator Nokia 6500 Calculator for Nokia 6500. Performs basic math functions. Simple and userfriendly design   Kalk This is a java calculator   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 

 Touchscreen scientific calculator for S6 Scientific Calculator is an easy to use universal scientific calculator app for touchscreen devices. It evaluates basic mathematical as well as nested scientific expressions under consideration of the algebraic convention "brackets before power before point before line calculation"   GraphViewer GraphViewer  You have a modern, Java compatible mobile phone and wouldn't it be handy if you could use your mobile to plot functions or use as an advanced scientific calculator? Well, GraphViewer is a graphical calculator that you can download and install on your mobile phone   Resistor Calculator Resistor Calculator  Given the color bands on the resistor, it will tell you the resistance and tolerance rating. It is designed so that you may easily see how resistance is calculated using the color bands and hence calculate resistance on your own   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   Jasymca Jasymca  Jasymca is a symbolic calculator. It solves and manipulates equations, handles basic calculus problems, and provides a few more typical functions of computer algebra systems. The syntax is loosely related to GNUMaxima. While it is fun to play with mobile devices, it teaches the use of computer algebra systems, and may even be used to solve some real world problems 
