# PE.Mech[Lite] vs A

The clearest difference is price: PE.Mech[Lite] at Free against A's $0.99. PE.Mech[Lite] also leads on update cadence (every 2 months vs every 39 months). A's advantage is device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

PE.Mech[Lite] is free to download; A costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PE.Mech[Lite] ships an update every 2 months, A every 39 months. The most recent releases landed on September 8, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | PE.Mech[Lite] | A |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pemechlite/id1455308553/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 39 months |
| Monetization | Free | — |
| Size | 34 MB | 22 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [巍 顾](https://appshunter.io/developer/1368599824) | [Saman Wijenayake](https://appshunter.io/developer/1553615257) |

## 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


### A

[App page](https://appshunter.io/ios/app/a-level-computer-pro/id1624451572)

**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 A free?

A costs $0.99, with no in-app purchases.

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

Neither PE.Mech[Lite] nor A shows ads.

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

PE.Mech[Lite] ships an update every 2 months, and A every 39 months. Most recently, PE.Mech[Lite] was updated on September 8, 2026 and A on June 1, 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.*