PCalc for Java - Programming calculator. You can write programs for stack machine (with simplified Java like instruction set). Program consists of one or more procedure which can be nested. It is possible to access variables of top procedure (like in Pascal). You can execute program ste-by-step and inspect stack and variables in debugger

Graph2Go - Graphing calculators are instrumental in teaching and learning mathematics. It is an environment that supports conceptual understanding of functions in general, and school algebra and real analysis in particular. Especially, it enhances connections between graphic and symbolic representations

Made with practicality in mind, Calculator is a simple and easy calculator app, ideal for your every. It is easy to use with large buttons, clean and stylish design, and provides the basic functionalities most people need for daily calculations

TVH-72g Graphing Calculator - TVH-72g Graphing Calculator is a low-cost introductory & disposable graphing calculator for the educational use of schools and students who may have difficulty, are unable or may not wish to acquire a stand-alone feature-laden graphing calculator

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 GNU-Maxima. 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

RZCalculatorJavaVersion: 1.1 Upload Date: 13 Jun 11

Freeware

This calculator for java mobile phones can calculate binary, octal, decimal, hex numbers and convert it to each other. It supports logical expressions, parenthesisses, memory and 64bit integer arrithmetics. Operator precedence as in C++, C#, C, Java

MIDP Graphing Calculator - A graphing calculator for Java MIDP cell phones.
It actually implements a small programming language, parsing expressions into trees. One can define functions with an arbitrary number of parameters, and use the functions in java.lang.Math in addition to the normal operators

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

EasyCalcBasic - A very simple calculator.
Enter a list of up to 10 numbers, add labels.
Comes with hyper-intelligence:
You can write *,x,/,div,divide,subtract,plus,minus,times,takeaway, or pls,tms,add...you will still get the same result