# Steampunk Foucault Pendulum vs Illusio

The clearest difference is ads: Steampunk Foucault Pendulum at none against Illusio's shown. Illusio's advantage is update cadence (every 8 days vs every 12 months) and iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Steampunk Foucault Pendulum ships an update every 12 months, Illusio every 8 days. The most recent releases landed on November 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Steampunk Foucault Pendulum | Illusio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/steampunk-foucault-pendulum/id1185072793/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 37 MB | 59 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Brian Buck](https://appshunter.io/developer/999869732) | [Mind Mirage Apps Ltd](https://appshunter.io/developer/1896465995) |

## What reviewers say

### Steampunk Foucault Pendulum

[App page](https://appshunter.io/ios/app/steampunk-foucault-pendulum/id1185072793)

Experience a 3D physics simulation of Foucault's pendulum, demonstrating Earth's rotation. Explore its history, customize notifications, and find other pendulums globally. This educational tool brings a classic physics experiment to life with a steampunk aesthetic.

**Highlights:** 3D physics simulation, Steampunk theme, History and reference, Customizable notifications, Global pendulum locator, Earth rotation demonstration

**Features:** Vision Pro support

**In-app purchases:** none


### Illusio

[App page](https://appshunter.io/ios/app/illusio/id6771068807)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Steampunk Foucault Pendulum free?

Steampunk Foucault Pendulum is free to download, with no in-app purchases.

### Is Illusio free?

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

### Do Steampunk Foucault Pendulum or Illusio have ads?

Illusio shows ads; Steampunk Foucault Pendulum does not.

### Which is updated more often, Steampunk Foucault Pendulum or Illusio?

Steampunk Foucault Pendulum ships an update every 12 months, and Illusio every 8 days. Most recently, Steampunk Foucault Pendulum was updated on November 2, 2026 and Illusio on October 24, 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.*