# My Physics Calculator vs Radonsystem

The clearest difference is price: Radonsystem at Free against My Physics Calculator's $2.99. Radonsystem also leads on iOS requirement (13.0 vs 16.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

Radonsystem 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, Radonsystem every 23 months. The most recent releases landed on August 3, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | My Physics Calculator | Radonsystem |
| --- | --- | --- |
| 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** | Every 23 months |
| Monetization | Paid | — |
| Size | 7 MB | 4 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Alexander Bernitt](https://appshunter.io/developer/1551635659) |

## 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


### Radonsystem

[App page](https://appshunter.io/ios/app/radonsystem/id1551635657)

**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 Radonsystem free?

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

### Do My Physics Calculator or Radonsystem have ads?

Neither My Physics Calculator nor Radonsystem shows ads.

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

My Physics Calculator ships an update every 12 months, and Radonsystem every 23 months. Most recently, My Physics Calculator was updated on August 3, 2026 and Radonsystem on September 9, 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.*