# PE.Mech[Lite] vs 3DPhyS

The clearest difference is ads: PE.Mech[Lite] at none against 3DPhyS's shown. PE.Mech[Lite] also leads on monetization model (free vs ad-supported). 3DPhyS's advantage is update cadence (fortnightly vs every 2 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

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

PE.Mech[Lite] ships an update every 2 months, 3DPhyS fortnightly. The most recent releases landed on September 8, 2026 and August 6, 2026 respectively.

## The numbers

| Metric | PE.Mech[Lite] | 3DPhyS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pemechlite/id1455308553/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Ad-supported |
| Size | 34 MB | 176 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [巍 顾](https://appshunter.io/developer/1368599824) | [Sota Takasugi](https://appshunter.io/developer/1713502017) |

## What reviewers say

### PE.Mech[Lite]

[App page](https://appshunter.io/ios/app/pemechlite/id1455308553)

Explore fundamental physics concepts through interactive simulations. Visualize motion, energy, and forces with real-time diagrams and adjustable parameters. Ideal for high school and college students to supplement theoretical learning.

**Highlights:** Simulate kinematics and motion laws, Visualize physical values in real-time, Adjustable parameters for varied results, Frictionless and air resistance-free environments, Diagrams for forces, energy, and motion

**Features:** macOS Compatibility

**In-app purchases:** none


### 3DPhyS

[App page](https://appshunter.io/ios/app/3dphys-physics-simulator/id6470351815)

Explore fundamental physics concepts through interactive simulations. Adjust parameters like initial velocity and bounce coefficient to understand phenomena like free fall, projectile motion, and circular motion. This app supports learning in multiple languages.

**Highlights:** Interactive physics simulations, Adjustable experiment parameters, Multiple physics experiment modules, Multilingual interface, Free to download and use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PE.Mech[Lite] free?

PE.Mech[Lite] is free to download, with no in-app purchases.

### Is 3DPhyS free?

3DPhyS is free to download, with no in-app purchases.

### Do PE.Mech[Lite] or 3DPhyS have ads?

3DPhyS shows ads; PE.Mech[Lite] does not.

### Which is updated more often, PE.Mech[Lite] or 3DPhyS?

PE.Mech[Lite] ships an update every 2 months, and 3DPhyS fortnightly. Most recently, PE.Mech[Lite] was updated on September 8, 2026 and 3DPhyS on August 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*