# Mechanical Pendulums

> Mechanical Pendulums (iPhone/iPad app by Torbjorn Sjogren.)

- Source: https://appshunter.io/ios/app/mechanical-pendulums/id377376047 (this page in markdown: same URL + `.md`)
- Developer: [Torbjorn Sjogren](https://appshunter.io/developer/313743954)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 0 MB
- Languages: English
- Released: 2010-06-21
- Data updated: 2026-05-29
- User reviews in markdown: https://appshunter.io/ios/app/mechanical-pendulums/id377376047/reviews.md

## What is Mechanical Pendulums?

In mechanics, in the area of dynamical system, a N-tuple pendulum is a set of N simple pendulums attached to each other. These N-tuple pendulums are physical systems that exibits rich dynamical behavior.  For certain energies, are the motion of these mechanical pendulums often chaotic. 

You can influence the motion of the pendulums by holding your device in different positions. The equations of motions of these pendulums has been derived using the Sophia mechanical package.  The different set of differential equations are solved using the 4:th order Runge-Kutta method for the time stepping.

Within this application you can switch between these mechanical pendulums:
- Double
- Triple
- Quadruple
- Quintuple
- Sextuple
- Octuple
- Symmtric Double
- Simple 3-Dimensional

The visualization of the pendulums can be viewed in either a Quartz view or in an OpenGL view.


## Version history (last 1 release)

### Version 1.1 — 2026-05-26

- Rewrite renderer into Metal
- Updated for the latest iPhones
- Full-screen edge-to-edge layout

## More apps by Torbjorn Sjogren

- [iTurbo](https://appshunter.io/ios/app/iturbo/id314368331)
- [Kutta Joukowski](https://appshunter.io/ios/app/kutta-joukowski/id370836602)
- [Double Pendulum Simulation](https://appshunter.io/ios/app/double-pendulum-simulation/id370962405)
- [Triple Pendulum](https://appshunter.io/ios/app/triple-pendulum/id371860711)

All apps by Torbjorn Sjogren: https://appshunter.io/developer/313743954

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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 2026-05-29.*