# My Physics Calculator vs Mars Rock E

The clearest difference is price: Mars Rock E at Free against My Physics Calculator's $2.99. Mars Rock E also leads on update cadence (monthly vs every 12 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Mars Rock E is free to download; My Physics Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

My Physics Calculator ships an update every 12 months, Mars Rock E monthly. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | My Physics Calculator | Mars Rock E |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.3 (44 ratings)](https://appshunter.io/ios/app/my-physics-calculator/id827404220/reviews)** | — |
| Number of ratings | **44** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Monthly** |
| Monetization | Paid | — |
| Size | 7 MB | 22 MB |
| Requires iOS | 16.6 | **15.5** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Xiamen Mars Rock Science Technology Co.,Ltd](https://appshunter.io/developer/1787113189) |

## What reviewers say

### My Physics Calculator

[App page](https://appshunter.io/ios/app/my-physics-calculator/id827404220)

This app offers a comprehensive suite of over 130 calculators for physics and engineering calculations. It provides clear formulas and definitions for each parameter, making complex calculations accessible with a simple interface.

**Highlights:** 130+ physics and engineering calculators, Includes formulas and definitions, Simple user interface, Mechanics & Motion calculations, Fluids & Thermodynamics calculations, Electrical & Circuit calculations, Projectile Motion calculations

**In-app purchases:** none


### Mars Rock E

[App page](https://appshunter.io/ios/app/mars-rock-e/id6739800863)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is My Physics Calculator free?

My Physics Calculator costs $2.99, with no in-app purchases.

### Is Mars Rock E free?

Mars Rock E is free to download, with no in-app purchases.

### Do My Physics Calculator or Mars Rock E have ads?

Neither My Physics Calculator nor Mars Rock E shows ads.

### Which is updated more often, My Physics Calculator or Mars Rock E?

My Physics Calculator ships an update every 12 months, and Mars Rock E monthly. Most recently, My Physics Calculator was updated on October 14, 2026 and Mars Rock E on October 3, 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.*