Simulation Pi app for iPhone and iPad

It is software for obtaining a π by Monte Carlo method. The principle is what can be understood in the junior and senior high school students in the rudimentary mathematics. Look at the course of its calculation on the screen, you will be able to realize the state of the calculation.
　Three of the screen are available.One is the screen that random numbers are drawn one by one.One is the screen overlaying draw a random number.Another is the screen drawn a random number by the number entered at the beginning.Screen to superimpose draw a random number will decrease is gradually speed on the program of nature.
It is set to be able to display up to 10 million pieces.
In class of how to determine the π, I think that it is useful in describing the Monte Carlo method.