A free program for Android, by RGB Studios.

This application will help you calculate many different types of probability and statistics, such as binomial, poisson, normal, and many more!

All you need to do is enter the probability and number of successes, and the app will give you the answer to the percentage of success. You can view the results in a beautiful graph, as well as the probability of the event, and the odds of more, or less than that many.

You can also view the mean, standard deviation, and the probability of the event, and you can see beautiful graphs displaying the distribution as a bar graph and the odds of going above, below, or exactly equal to the number of successes you provided in a pie chart.