It calculates probabilities using the normal distribution, the standard one with mean 0 and standard deviation 1, as any other one that you wan to introduce, with mean and standard deviation personalized.
It is included the possibility of calculating:
* Probability of which a quantity is over the Normal one.
* Probability of which a quantity is below the Normal one.
* Probability of which the variable is understood between two quantities.
This app is considered as a useful tool for people who want to do calculations of probabilities inside a Normal distribution, it is much more quickly than the classic table.