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Last updated on: 2026-08-18
Android Apps > Education > Probability Distributions
Probability Distributions icon

Probability Distributions

5.9
Matthew Bognar
4.83
1,852 reviews
500,000+
Downloads
Free

Compute probabilities, percentiles, and plot various probability distributions.

Probability Distributions Screenshot 1 of 4
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4.83 · 1,852 reviews · 500,000+ downloads

Probability Distributions is a focused educational tool for computing probabilities, percentiles, and plotting a wide range of distributions. It supports PMF plots for discrete distributions (binomial, geometric, Poisson, hypergeometric, and negative binomial) and PDF plots for common continuous distributions (normal, t, chi-square, F, and more). With 500,000+ total downloads and 2K in the last 30 days, the app shows solid, steady interest and a strong user rating of 4.83 from 1,852 reviews.

Pros & Cons

  • Specialized focus on a broad set of probability distributions (discrete and continuous)
  • Plots for PMF and PDF enable quick visual analysis
  • Calculations for probabilities and percentiles support probabilistic decisions
  • Recent updates improve viewing (landscape mode) and keep the app aligned with the latest Android SDK
  • Not a general-purpose calculator; its strength is probability-focused rather than broad statistical tools
  • No top-list ranking yet; competitive landscape includes broader math/statistics apps
  • Some prior probability knowledge is recommended to maximize usefulness

About Probability Distributions

Probability Distributions is an education app developed by Matthew Bognar.

How many times has Probability Distributions been downloaded?

Probability Distributions has been downloaded 710 thousand times. In the last 30 days, the app was downloaded 2 thousand times.

What is the rating of Probability Distributions?

Probability Distributions is rated 4.83 out of 5 stars, based on 1.9 thousand ratings.

Is Probability Distributions free?

Probability Distributions is free to download. The APK download size is 12.94 MB. The latest version available is 5.9. The last update was on July 9, 2025.

What are the requirements for Probability Distributions?

Probability Distributions requires Android 9.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2012.

Description
Compute probabilities and plot the probability mass function for the binomial, geometric, Poisson, hypergeometric, and negative binomial distributions. Compute probabilities, determine percentiles, and plot the probability density function for the normal (Gaussian), t, chi-square, F, exponential, gamma, beta, and log-normal distributions.

Some knowledge of probability distributions is required! If you don't know what a "binomial" distribution is, for example, this application will not be useful to you.

Recent changes:
Enabled landscape mode. Small UI changes. Improved rendering of Formulas. Updated SDK to version 36.
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More data about Probability Distributions

Price Free to download
Total downloads 710 thousand
Recent downloads 2 thousand
Rating 4.83 based on 1.9 thousand ratings
Ranking Not ranked
Version 5.9
APK size 12.9 MB
Number of libraries 16
Designed for Android 9.0+
Suitable for Everyone
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Probability Distributions compared with similar apps

Common keywords of similar apps

Compute Probabilities Plot Percentiles Function Probability Distributions Binomial Normal

Keywords missing from this app

Calculator Statistics App Statistical Dice Distribution Roll Calculations Data Number Random Support Rolls Regression Analysis Table Version Enter Test Formula Attack Numbers Results Features Standard Roller Quick Scientific Financial Formulas Easy Graphing Generator Math Functions Tool Show Information Frequency Sigma Ci Mode Recent History Reference Attacks

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Google Play Rating history and histogram

Rating history
Subscribe to see the full rating timeline
1.7K
110
34
17
17

Downloads over time

Downloads over time
Subscribe to see download velocity and history

Probability Distributions has been downloaded 710 thousand times. Over the past 30 days, it averaged 67 downloads per day.

Changelog of Probability Distributions

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Developer information for Matthew Bognar

Matthew Bognar

mattbognar@gmail.com

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Comments on Probability Distributions for Android

★★★★★ Shirshendu Dey · Aug 9, 2019
Very good app for statistical use... Contain all types of probability and sampling distributions... With respective graph and moments. Highly recommended for statisticians...
★★★★★ Richard Graham · Oct 19, 2021
Needed to look up some Chi Square distribution values and this app makes it really easy!
★☆☆☆☆ C Andino · Nov 29, 2023
I get wrong answers using some of the distributions like Poisson

Google Play Rankings for Probability Distributions

This app is not ranked

Technologies used by Probability Distributions

2 permissions · 16 libraries
Subscribe to see full permission and library details
Trust & Safety: Permissions requested are INTERNET and a dynamic, non-exported permission (com.mbognar.probdist.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION). This minimizes exposed surface beyond standard network access and internal broadcast handling; no additional sensitive permissions are requested.
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