# Mole OTG vs Interactive Physics Simulator

The clearest difference is price: Mole OTG at Free against Interactive Physics Simulator's $4.99. Mole OTG also leads on update cadence (daily vs weekly) and iOS requirement (12.0 vs 17.6). Interactive Physics Simulator's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Mole OTG is free to download; Interactive Physics Simulator costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mole OTG ships an update daily, Interactive Physics Simulator weekly. Both last shipped on September 20, 2026.

## The numbers

| Metric | Mole OTG | Interactive Physics Simulator |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interactive-physics-simulator/id6755827134/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Weekly |
| Monetization | — | Paid |
| Size | 31 MB | 9 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Japality Limited](https://appshunter.io/developer/1574046707) | [Dietmar Henrich](https://appshunter.io/developer/1856587905) |

## What reviewers say

### Mole OTG

[App page](https://appshunter.io/ios/app/mole-otg/id6749512146)

**Features:** macOS Compatibility

**In-app purchases:** none


### Interactive Physics Simulator

[App page](https://appshunter.io/ios/app/interactive-physics-simulator/id6755827134)

Explore over 100 real-time physics simulations across 38 modules, covering classical, modern, quantum, and medical physics. Visualize complex phenomena with adjustable parameters, formulas, and immediate visual feedback. Ideal for students and educators seeking an interactive learning laboratory.

**Highlights:** 100+ interactive simulations, 38 physics modules, Real-time parameter control, Adjustable sliders with visual feedback, Formulas and numerical results displayed, Quiz mode for testing understanding, Support for 12 languages

**In-app purchases:** none


## Frequently asked questions

### Is Mole OTG free?

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

### Is Interactive Physics Simulator free?

Interactive Physics Simulator costs $4.99, with no in-app purchases.

### Do Mole OTG or Interactive Physics Simulator have ads?

Mole OTG shows ads; Interactive Physics Simulator does not.

### Which is updated more often, Mole OTG or Interactive Physics Simulator?

Mole OTG ships an update daily, and Interactive Physics Simulator weekly. Most recently, Mole OTG was updated on September 20, 2026 and Interactive Physics Simulator on September 20, 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.*