# My Physics Calculator vs Mars Rock

The clearest difference is price: Mars Rock at Free against My Physics Calculator's $2.99. Mars Rock 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 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 monthly. Both last shipped on October 28, 2026.

## The numbers

| Metric | My Physics Calculator | Mars Rock |
| --- | --- | --- |
| 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 | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Monthly** |
| Monetization | Paid | — |
| Size | 7 MB | 23 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

**Features:** Vision Pro support

**In-app purchases:** none


### Mars Rock

[App page](https://appshunter.io/ios/app/mars-rock/id6739800801)

**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 free?

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

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

Neither My Physics Calculator nor Mars Rock shows ads.

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

My Physics Calculator ships an update every 12 months, and Mars Rock monthly. Most recently, My Physics Calculator was updated on October 28, 2026 and Mars Rock on October 28, 2026.

---

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