# Extended Euclidian Algorithm vs Galton Board App

The clearest difference is price: Galton Board App at Free against Extended Euclidian Algorithm's $0.99. Galton Board App also leads on update cadence (every 3 weeks vs every 3 months). Extended Euclidian Algorithm's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Galton Board App is free to download; Extended Euclidian Algorithm costs $0.99 up front. Galton Board App sells 1 one-off in-app purchase. Extended Euclidian Algorithm asks for nothing beyond the download.

Extended Euclidian Algorithm ships an update every 3 months, Galton Board App every 3 weeks. The most recent releases landed on May 17, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Extended Euclidian Algorithm | Galton Board App |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (116 ratings)](https://appshunter.io/ios/app/galton-board-app/id6446604966/reviews)** |
| Number of ratings | — | **116** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 67 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Gustav Gutsche](https://appshunter.io/developer/1661525357) | [Index Fund Advisors, Inc](https://appshunter.io/developer/914924558) |

## What reviewers say

### Extended Euclidian Algorithm

[App page](https://appshunter.io/ios/app/extended-euclidian-algorithm/id1671229466)

**Features:** macOS Compatibility

**In-app purchases:** none


### Galton Board App

[App page](https://appshunter.io/ios/app/galton-board-app/id6446604966)

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:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stock Market Data | Free | one-time |

**What reviewers like**

- 👍 Great for understanding bell curves
- 👍 Excellent educational tool
- 👍 Visually appealing and well-designed
- 👍 Helpful for STEM and psychology classes
- 👍 Simplifies complex math concepts

**Requested features**

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


## Frequently asked questions

### Is Extended Euclidian Algorithm free?

Extended Euclidian Algorithm costs $0.99, with no in-app purchases.

### Is Galton Board App free?

Galton Board App is free to download, with in-app purchases available.

### Do Extended Euclidian Algorithm or Galton Board App have ads?

Neither Extended Euclidian Algorithm nor Galton Board App shows ads.

### Which is updated more often, Extended Euclidian Algorithm or Galton Board App?

Extended Euclidian Algorithm ships an update every 3 months, and Galton Board App every 3 weeks. Most recently, Extended Euclidian Algorithm was updated on May 17, 2026 and Galton Board App on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*