# Gravity Two vs Space Crash Simulator

The clearest difference is in-app purchases: Gravity Two at none against Space Crash Simulator's 1. Gravity Two also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.0). Space Crash Simulator's advantage is update cadence (every 4 days vs every 11 months). On price and device support there is nothing between them.

Both are free to download. Space Crash Simulator sells 1 one-off in-app purchase. Gravity Two asks for nothing beyond the download.

Gravity Two ships an update every 11 months, Space Crash Simulator every 4 days. The most recent releases landed on September 17, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Gravity Two | Space Crash Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (588 ratings)](https://appshunter.io/ios/app/space-crash-simulator/id6742357679/reviews)** |
| Number of ratings | — | **588** |
| Positive reviews | — | 82.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 16 MB | 178 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sami Salkosuo](https://appshunter.io/developer/820432278) | [WPC](https://appshunter.io/developer/1681830786) |

## What reviewers say

### Gravity Two

[App page](https://appshunter.io/ios/app/gravity-two/id1493331179)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |
| --- | --- | --- |
| No-Ads | $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 Gravity Two free?

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

### Is Space Crash Simulator free?

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

### Do Gravity Two or Space Crash Simulator have ads?

Space Crash Simulator shows ads; Gravity Two does not.

### Which is updated more often, Gravity Two or Space Crash Simulator?

Gravity Two ships an update every 11 months, and Space Crash Simulator every 4 days. Most recently, Gravity Two was updated on September 17, 2026 and Space Crash Simulator on September 22, 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.*