# Grating Simulator — Interactive 4D dot viewer

> Interactive 4D dot viewer (iPhone/iPad app by Mark Barclay.)

- Source: https://appshunter.io/ios/app/grating-simulator/id6759843063 (this page in markdown: same URL + `.md`)
- Developer: [Mark Barclay](https://appshunter.io/developer/1779667710)
- Category: Entertainment, Graphics & Design
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 1 MB
- Languages: American English
- Released: 2026-03-13
- Data updated: 2026-06-04
- User reviews in markdown: https://appshunter.io/ios/app/grating-simulator/id6759843063/reviews.md

## What is Grating Simulator?

The laser interference pattern is similar to what would be produced by a Laser pointer’s beam passing through a diffraction grating – When you shine a laser pointer (green, 532nm wavelength) through a series of transmission diffraction gratings, you get a beautiful regular array of bright spots. The center spot is the zero-order (undiffracted beam), and the surrounding spots are the various diffraction orders. The symmetry and regularity of the pattern is characteristic of a diffraction grating pattern.

This simulation could be used as a demonstration setup for physics education – teaching about wave optics, interference and diffraction. It is a classic physics demonstration that beautifully illustrates the wave nature of light and the principles of diffraction.


## Version history (last 2 releases)

### 1.0.1 — 2026-03-18

Dot size can be adjusted.
Grating pitch can be adjusted.
More responsive.
New app logo.
App is free and ad free.

### 1.0 — 2026-03-13

No release notes.

## More apps by Mark Barclay

- [Molecule Maker](https://appshunter.io/ios/app/molecule-maker/id6739954250)
- [Maze Boy](https://appshunter.io/ios/app/maze-boy/id6761824742)

All apps by Mark Barclay: https://appshunter.io/developer/1779667710

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*