# Galton Board App vs NSOperation

The clearest difference is in-app purchases: NSOperation at none against Galton Board App's 1. Galton Board App's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 18.2). On price and ads there is nothing between them.

Both are free to download. Galton Board App sells 1 one-off in-app purchase. NSOperation asks for nothing beyond the download.

## The numbers

| Metric | Galton Board App | NSOperation |
| --- | --- | --- |
| Price | Free | 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 67 MB | 2 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Index Fund Advisors, Inc](https://appshunter.io/developer/914924558) | [Daniel Romero](https://appshunter.io/developer/893059976) |

## What reviewers say

### 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 demonstrates the binomial and normal distributions using a dynamic Galton Board, with options to simulate stock market data. It's an engaging tool for learning complex theories.

**Highlights:** Interactive Galton Board simulation, Demonstrates binomial and normal distributions, Stock market data simulation, Detailed mathematical concept explanations, Pause and slow-motion options, Gyroscope-enhanced bead movement

**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)


### NSOperation

[App page](https://appshunter.io/ios/app/nsoperation/id6746875864)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Galton Board App free?

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

### Is NSOperation free?

NSOperation is free to download, with no in-app purchases.

### Do Galton Board App or NSOperation have ads?

Neither Galton Board App nor NSOperation shows ads.

---

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