Easy Probability vs Galton Board App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Gradual learning curve
- Interactive quizzes
- Voice-over narration
- Voice input for answers
- Dark theme support
- Portrait and landscape modes
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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.
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Easy Probability | Galton Board App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) | 5.0 (116 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 | 116 — better |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 39 MB | 67 MB |
| Age rating | +4 | 4+ |
| Developer | Jelle Van den Eynde | Index Fund Advisors, Inc |
Customer experience
Easy Probability
Galton Board App
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
Easy Probability
- Module 2 quizzes$0.99
Galton Board App
- Stock Market DataFree
Questions
Is Easy Probability free?
Is Galton Board App free?
Which has better reviews, Easy Probability or Galton Board App?
Do Easy Probability or Galton Board App have ads?
Which is updated more often, Easy Probability or Galton Board App?
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