# Radioactive Decay Simulator vs DecayMate

The clearest difference is update cadence: DecayMate at every 5 weeks against Radioactive Decay Simulator's every 17 months. Radioactive Decay Simulator's advantage is device support (3 vs 1) and iOS requirement (9.3 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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

## The numbers

| Metric | Radioactive Decay Simulator | DecayMate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/radioactive-decay-simulator/id959357000/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 20 MB | 1 MB |
| Requires iOS | **9.3** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alistair Shaw](https://appshunter.io/developer/959356999) | [Ludovico Pestarino](https://appshunter.io/developer/1856700574) |

## What reviewers say

### 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


### DecayMate

[App page](https://appshunter.io/ios/app/decaymate/id6755844272)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Radioactive Decay Simulator free?

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

### Is DecayMate free?

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

### Do Radioactive Decay Simulator or DecayMate have ads?

Neither Radioactive Decay Simulator nor DecayMate shows ads.

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

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