Dice&Coin Odds Calculator
This app helps you quickly calculate dice and coin odds with a minimum of fuss.
For example, you can ask it what are the odds of getting 10 or better on two six-sided dice . . . or the odds of getting exactly 50 on three twenty-sided dice . . . and so on.
Also works for coins. For example, it can tell you the odds of getting exactly 10 heads if you flip 20 coins.