Comparison

Easy Probability vs Galton Board App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Easy Probability

Master basic probability with interactive quizzes designed to improve your academic performance and decision-making skills. The app offers a gradual learning curve, starting with simple problems and progressing to more complex challenges, all without advertisements.

Highlights
  • Gradual learning curve
  • Interactive quizzes
  • Voice-over narration
  • Voice input for answers
  • Dark theme support
  • Portrait and landscape modes
Read full description

Learning basic probability is quick & easy, and will pay off for the rest of your life. You'll get better grades in school, do better at job interviews, and make better decisions. We'll start with the easiest quizzes imaginable, and work our way to challenging problems one tiny step at a time. Your friends & family will be impressed you can do this! * No advertisements * No sign-up screens * Supports dark theme * Supports portrait & landscape mode * Optional narrator voice-over * Option to answer with your voice * Calculations are verified with simulations When using audio mode with earphones or speakers, the app reacts to taps anywhere on the screen, so you can practice without looking at the screen.

About

Galton Board App

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.

Highlights
  • 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
Features
Read full description

Unlock the power of probabilities and explore the beauty of mathematics in motion with the Galton Board App. This innovative application transforms your mobile device into a dynamic, interactive probability demonstrator that brings centuries-old mathematical concepts to life. The app utilizes your iPhone's and iPad's gyroscope capabilities, creating an immersive experience where the beads appear as if they are rolling around inside your device. The Galton Board was invented by Sir Francis Galton in 1873 to illustrate the binomial distribution. Through our app, we've recreated this educational tool to demonstrate how, with a large number of beads and rows of hexagons, it approximates the normal distribution - a concept known as the Central Limit Theorem. Key Features: • An interactive Galton Board that displays the principles of probabilities and the binomial distribution. • Detailed explanations of related mathematical concepts, including probability theories, independent identically distributed (IID) random variables, regression to the mean, the law of large numbers, the random walk, the Gambler's Fallacy, and more. • A "Stock Market Data" version, simulating the probabilities of a range of historical monthly market returns, and demonstrating their correlation with the binomial distribution. • The 'Historical Monthly Return Beads' featured with the Stock Market Data, where beads fall through the board based on monthly historical returns for a choice of 20 index portfolios. • Pause or slow-motion options to study the bead movement and distribution patterns in detail. The Galton Board App is ideal for statistics, math, and stock market enthusiasts. It is not just an app, it's an immersive, hands-on approach to understanding probabilities, the binomial distribution, and the stock market behavior. Presented by Index Fund Advisors, this app is your go-to educational tool. Download now and embark on a fascinating journey into the world of probabilities and the "law of unreason" as referred to by Sir Francis Galton himself!

Screenshots

Easy Probability4 screens
Galton Board App4 screens

Verdict

The call

The clearest difference is review sentiment: Galton Board App at 100% against Easy Probability's 0%. Galton Board App also leads on rating (5.0 vs 4.2) and ratings volume (116 vs 5). Easy Probability's advantage is iOS requirement (8.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Easy Probability sells 1 one-off in-app purchase and Galton Board App sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Galton Board App holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Galton Board App has 116 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 0% of Easy Probability's written reviews are positive against 100% of Galton Board App's.

UpkeepUpdate frequency

Easy Probability ships an update every 2 weeks, Galton Board App every 3 weeks. The most recent releases landed on September 20, 2026 and September 19, 2026 respectively.

Scorecard4 real differences · 6 level
Easy Probability versus Galton Board App: the parameters behind the verdict, then further details
ParameterEasy ProbabilityGalton Board App
PriceFreeFree
Rating4.2 (5 ratings)5.0 (116 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings5116 — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS8.0 — better15.0
Further details — not scored
Size39 MB67 MB
Age rating+44+
DeveloperJelle Van den EyndeIndex Fund Advisors, Inc

Customer experience

Easy Probability

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Galton Board App

All ratings116 ratings
Positive99.1%
Neutral0.9%
Negative0.0%
Written reviews39 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Easy Probability

Not enough reviews yet to summarise bugs or requests.

Galton Board App

Requested features

1 request
  • Bring back the physical product (commented by EJ's App, likely not a feature request for the app itself but a general wish)

In-app purchases

1 purchases

Easy Probability

One-time1
  • Module 2 quizzes$0.99
1 purchases

Galton Board App

One-time1
  • Stock Market DataFree

Questions

Is Easy Probability free?
Easy Probability is free to download, with in-app purchases available.
Is Galton Board App free?
Galton Board App is free to download, with in-app purchases available.
Which has better reviews, Easy Probability or Galton Board App?
Galton Board App is rated higher. Easy Probability averages 4.2 out of 5 from 5 ratings, while Galton Board App averages 5.0 from 116 ratings.
Do Easy Probability or Galton Board App have ads?
Neither Easy Probability nor Galton Board App shows ads.
Which is updated more often, Easy Probability or Galton Board App?
Easy Probability ships an update every 2 weeks, and Galton Board App every 3 weeks. Most recently, Easy Probability was updated on September 20, 2026 and Galton Board App on September 19, 2026.

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