TheMathsCalculator - It is a simple calculator which can perform basic mathematical operations like addition subtraction division multiplication remainder and average of two numbers.
While in division and subtraction one has to take care of order in which they fill the data
Snap Calc - SnapCalc is a superfast calculator.
The cool thing about SnapCalc is that it does not have a '=' button!
It automatically calculates the answer and dynamically displays it instantly on the screen. It uses the SnapCalc engine to make the calculations in a fraction of a second