Galton Board - Bean Machine

By: 乃君黄

experiment on your phone

Features & Capabilities

Chaos and order

This app is a digital replica of the Galton Board, a device designed to demonstrate the central limit theorem.   

Just put your phone upright, you can watch how the balls fall, hit pegs, take different paths, and eventually fall into different bins at the bottom.

  In the end, you will find the bins in the middle hold more balls than those on the sides.

User Growth & Download Statistics

App

By:

乃君黄

Rating:

4.60

(34) 0.40

Version:

2.0.0 Last updated: 2019-12-01

Version code:

833821524

Creation date:

2018-11-28

Compatible devices:

Size:

43.41MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-07

Compare stats and ranking:

Ranking

# 226,510 ▲ 606,080

For Developers

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Contact the developer

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Developed by:

乃君黄

Apple Apps Store

https://apps.apple.com/cn/app/galton-board-bean-machine/id1444632751?l=en-GB

User Reviews

This is a digital rendition of a device that lets one visualize the mathematical concept of a “Bell Curve.” There are some reviews for this app giving low marks, complaining about it not being fun or having scores, that it’s just balls falling down - well, a Galton Board isn’t meant to be a game, it is “just” balls falling, but in an elegant way that can be used for education. Maybe they thought it was a Pachinko game, which looks a bit similar? I like it (but I’m a weirdo that actually went in search of a Galton Board app). It would be great if the makers added a setting for it to act as if the board was perfectly upright, as it seems very sensitive to how you hold your phone. Also, perhaps adding a slightly faster speed (if you want to show how the randomness ends up in the same ordered bell curve almost every time). Despite my geeky review, it is also fun just to watch, the cascading balls bouncing off pegs is rather mesmerizing!