Galton Board App

Galton Board App

Probability Demonstrator

114 ratings
39 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • February 7, 2024
  • May 29, 2026

Features

Galton Board App screenshot #1 for iPhone
Galton Board App screenshot #2 for iPhone
Galton Board App screenshot #3 for iPhone
Galton Board App screenshot #4 for iPhone
Galton Board App screenshot #5 for iPhone
Galton Board App screenshot #6 for iPhone
iphone
ipad
🖼️Get Icon
Icons↘︎

About

Explore probability and mathematical concepts through an interactive simulation. This app uses your device's gyroscope to create a dynamic Galton Board, illustrating binomial and normal distributions. It also offers a stock market simulation to demonstrate market return probabilities.

Interactive Galton Board simulation
Binomial and normal distribution demonstration
Stock market data simulation
Detailed mathematical concept explanations
Pause and slow-motion controls
Historical market return bead simulation
Show original description

What's New in Galton Board App

3.0

May 29, 2026

* Performance updates

1

In-App Purchases

Free

Stock Market Data

Includes historical stock market data

User reviews

Beautiful representation of some of the most fascinating real world math

This app simulates a Galton board, which is a pegboard that you drop marbles through and they bounce off the pegs and fall into bins. It shows a natural appearance of the famous Bell curve from statistics, and addresses a whole bunch of other math stuff like triangular numbers and Pascal’s triangle in a natural and interesting way.

Beautifully done, could be a wonderful teacher’s aid or homeschool resource.
Show more

Great product for stats student and fans

Love this product. The first time I saw a Galton Board was the the Science Museum in Flushing, NY. My mind was blown.

I am so glad that a proper digital version was created. It would be awesome if Index Fund Advisors, Inc. could bring the physical product back.

Super helpful for my class!

This app was great for helping me understand the concept of bell curves for a class I’m taking this semester! I’m glad it’s out there for students like me :)

This app helped me understand bell curves

Caden Fuentes!

Using this app I was better able to understand what a bell curve was and how to read a bell curve! I showed this app to a few of my friends who are in economics and they were just as impressed as I was on how awesome this app was! It helped me learn and studying for a test that had a few bell curves on it! Over all great app!
Show more

Cool!

Math in motion? Yes, please!

Developer apps

FAQ

What is the Galton Board App?

The Galton Board App is an interactive educational tool that simulates the Galton Board, a device invented to demonstrate probability concepts. It uses your device's gyroscope to visually show how beads fall and distribute, illustrating the binomial and normal distributions.

What mathematical concepts does the app explain?

The app explains fundamental mathematical concepts such as probability theories, the binomial distribution, the normal distribution, the Central Limit Theorem, independent identically distributed random variables, regression to the mean, the law of large numbers, and the random walk.

Does the app have a stock market simulation?

Yes, the app features a "Stock Market Data" version that simulates the probabilities of historical monthly market returns for various index portfolios. This helps demonstrate their correlation with the binomial distribution.

Is the Galton Board App free to use?

The app is free to download and use, but it offers in-app purchases for additional features or content. Specific details on what is included in the free version versus paid content are available within the app.

What devices is the Galton Board App compatible with?

The app is designed to utilize the gyroscope capabilities of iPhones and iPads, suggesting it is compatible with these Apple devices. Users should check the app store listing for specific iOS version requirements.