# Mechanical Pendulums vs Light Lab

The clearest difference is in-app purchases: Mechanical Pendulums at none against Light Lab's 2. Light Lab's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. Light Lab sells 2 one-off in-app purchases. Mechanical Pendulums asks for nothing beyond the download.

## The numbers

| Metric | Mechanical Pendulums | Light Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mechanical-pendulums/id377376047/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 4 months |
| Monetization | Free | — |
| Size | 0 MB | 8 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ManneTroll Solutions](https://appshunter.io/developer/313743954) | [Tokyo Hotta Directors Network](https://appshunter.io/developer/1722239755) |

## What reviewers say

### Mechanical Pendulums

[App page](https://appshunter.io/ios/app/mechanical-pendulums/id377376047)

Explore the complex and often chaotic motion of coupled pendulums. Interact with double, triple, quadruple, and even octuple pendulums, visualizing their behavior in 2D or 3D.

**Highlights:** N-tuple pendulum simulations, Interactive motion control, Multiple pendulum configurations, Quartz and OpenGL visualization, Derived equations of motion, 4th order Runge-Kutta solver

**In-app purchases:** none


### Light Lab

[App page](https://appshunter.io/ios/app/light-lab-learn-optics/id6504238420)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase all lenses | $4.99 | one-time |
| Lens Ticket Issuance Function | $9.99 | one-time |


## Frequently asked questions

### Is Mechanical Pendulums free?

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

### Is Light Lab free?

Light Lab is free to download, with in-app purchases available.

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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.*