About this app
The binomial distribution is a discrete probability distribution. To calculate it needs the probability of a single experiment, hits and trials. The app shows all important quantities step by step and provides the histogram of the binomial distribution and distribution function chart. You can choose between success probability and complentary probability. Depending on variable, natural numbers or decimal numbers are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Contents ] - binomial distribution with success probability and complementary probability - probability p, hits k and trials n must be entered - expected value, variance, standard deviation are calculated - results are calculated and shown in detail - histogram and distribution function chart - history to save the input - detailed solution - natural or decimal numbers are supported - no ads! [ Usage ] - there are fields for entering values using a special keyboard - press the check mark button at the bottom right to start the calculation - if values are missing, the corresponding field is highlighted in yellow - if the values are incorrect, the affected field will be highlighted in red - a short message explains why a value is incorrect - the entries in the history can be deleted or sorted - if you select an entry in the history, it will be automatically loaded for the calculation - the whole history can be deleted by pressing a button - solutions can be shared - p must be greater than 0 and less than 1 - k must be greater than or equal to n
Latest release
What’s New
The latest release 'Least common multiple' is linked in the menu section now. Minor performance and UI fixes.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 16, 2026 · 1:14 PM Free