# Atom Fusion vs Space Crash Simulator

The clearest difference is ads: Atom Fusion at none against Space Crash Simulator's shown. Atom Fusion also leads on review sentiment (100% vs 81%) and iOS requirement (11.0 vs 15.0). Space Crash Simulator's advantage is ratings volume (723 vs 6). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. Atom Fusion sells 1 one-off in-app purchase and Space Crash Simulator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.3 for Atom Fusion against 4.5 for Space Crash Simulator. That said, the two scores are not equally well evidenced: Space Crash Simulator has 723 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 100% of Atom Fusion's written reviews are positive against 81% of Space Crash Simulator's.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Atom Fusion | Space Crash Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/atom-fusion/id1373864217/reviews) | **[4.5 (723 ratings)](https://appshunter.io/ios/app/space-crash-simulator/id6742357679/reviews)** |
| Number of ratings | 6 | **723** |
| Positive reviews | **100.0% of reviews** | 81.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 12 MB | 254 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dennis van Oosten](https://appshunter.io/developer/1373864216) | [WPC](https://appshunter.io/developer/1681830786) |

## What reviewers say

### Atom Fusion

[App page](https://appshunter.io/ios/app/atom-fusion/id1373864217)

A casual tapping game where atoms fuse to create new elements. Research new atoms with a particle accelerator to discover all 118 elements of the periodic table.

**Highlights:** Atom fusion gameplay, Discover all 118 elements, Particle accelerator research, Casual tapping mechanics, Progressive discovery

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Space Crash Simulator

[App page](https://appshunter.io/ios/app/space-crash-simulator/id6742357679)

Experience realistic planetary collisions with a powerful physics engine. Customize your own cosmic events by adjusting particle count, velocity, and accuracy, or jump straight into high-energy impacts. This app offers a detailed, physics-based simulation for educational or entertainment purposes.

**Highlights:** Smoothed Particle Hydrodynamics (SPH) simulation, Real-time planetary collisions, Customizable simulation parameters, Setup Mode for scenario creation, Adjustable particle count and accuracy, Physics-based detailed simulation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |

**What reviewers like**

- 👍 Great game
- 🚀 Awesome graphics
- 💡 Interesting simulation features
- 🎉 Fun and enjoyable

**What reviewers complain about**

- 🐛 Occasional performance issues
- 💰 Too many ads

**Reported bugs**

- Collision trails not clearing properly
- Protoplanetary disc mode not working as expected

**Requested features**

- Add more celestial objects (black holes, stars, etc.)
- Allow for custom textures and planet/atmosphere customization
- Improve performance and optimization
- Add more graphic options and settings
- Allow for custom rings and moons around planets


## Frequently asked questions

### Is Atom Fusion free?

Atom Fusion is free to download, with in-app purchases available.

### Is Space Crash Simulator free?

Space Crash Simulator is free to download, with in-app purchases available.

### Which has better reviews, Atom Fusion or Space Crash Simulator?

Space Crash Simulator is rated higher. Atom Fusion averages 4.3 out of 5 from 6 ratings, while Space Crash Simulator averages 4.5 from 723 ratings.

### Do Atom Fusion or Space Crash Simulator have ads?

Space Crash Simulator shows ads; Atom Fusion does not.

### Which is updated more often, Atom Fusion or Space Crash Simulator?

Atom Fusion ships an update every 5 days, and Space Crash Simulator every 5 days. Most recently, Atom Fusion was updated on October 24, 2026 and Space Crash Simulator on October 25, 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.*