# Physics++ vs Radioactive Decay Simulator

The clearest difference is price: Radioactive Decay Simulator at Free against Physics++'s $0.99. Radioactive Decay Simulator also leads on review sentiment (100% vs 68%) and iOS requirement (9.3 vs 14.5). Physics++'s advantage is update cadence (every 5 weeks vs every 17 months) and chart position (#200 vs unranked). On rating, ads, in-app purchases and device support there is nothing between them.

Radioactive Decay Simulator is free to download; Physics++ costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.9 for Physics++ against 4.0 for Radioactive Decay Simulator. That said, the two scores are not equally well evidenced: Physics++ has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 68% of Physics++'s written reviews are positive against 100% of Radioactive Decay Simulator's.

Physics++ ships an update every 5 weeks, Radioactive Decay Simulator every 17 months. The most recent releases landed on October 9, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Physics++ | Radioactive Decay Simulator |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.9 (8 ratings)](https://appshunter.io/ios/app/physics-plus-plus/id325836855/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/radioactive-decay-simulator/id959357000/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 68.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 17 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#200** | — |
| Size | 75 MB | 20 MB |
| Requires iOS | 14.5 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dominik Hauser](https://appshunter.io/developer/325836858) | [Alistair Shaw](https://appshunter.io/developer/959356999) |

## What reviewers say

### Physics++

[App page](https://appshunter.io/ios/app/physics-plus-plus/id325836855)

**Currently charting:** #200 Top Paid · Education (US App Store)

This app provides a comprehensive collection of over 120 physics formulas across various topics like mechanics, relativity, and thermodynamics. It includes a search function, unit conversions, and physics constants, with many formulas featuring integrated calculators for easy problem-solving.

**Highlights:** 120+ physics formulas, Mechanics, relativity, thermodynamics coverage, Search function for formulas, Integrated formula calculators, Physics constants and unit conversions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Radioactive Decay Simulator

[App page](https://appshunter.io/ios/app/radioactive-decay-simulator/id959357000)

This educational tool simulates radioactive decay for a group of atoms. Users can choose preset atoms or input custom half-lives to observe decay in real-time graphs. The simulator allows for adjustments in atom count and speed for efficient analysis.

**Highlights:** Emulates radioactive decay, Select preset or custom atoms, Adjust atom count, Real-time decay graphs, Adjustable simulation speed

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Physics++ free?

Physics++ costs $0.99, with no in-app purchases.

### Is Radioactive Decay Simulator free?

Radioactive Decay Simulator is free to download, with no in-app purchases.

### Which has better reviews, Physics++ or Radioactive Decay Simulator?

Radioactive Decay Simulator is rated higher. Physics++ averages 3.9 out of 5 from 8 ratings, while Radioactive Decay Simulator averages 4.0 from 1 ratings.

### Do Physics++ or Radioactive Decay Simulator have ads?

Neither Physics++ nor Radioactive Decay Simulator shows ads.

### Which is updated more often, Physics++ or Radioactive Decay Simulator?

Physics++ ships an update every 5 weeks, and Radioactive Decay Simulator every 17 months. Most recently, Physics++ was updated on October 9, 2026 and Radioactive Decay Simulator on September 29, 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.*