# Open Space Game vs Solar System Sim

The clearest difference is ads: Open Space Game at none against Solar System Sim's shown. Solar System Sim's advantage is iOS requirement (15.0 vs 17.5). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Open Space Game sells 8 in-app purchases, starting at $4.99 per month and Solar System Sim sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Open Space Game | Solar System Sim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (4.3K ratings)](https://appshunter.io/ios/app/solar-system-sim/id6447612221/reviews)** |
| Number of ratings | — | **4.3K** |
| Positive reviews | — | 80.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 days |
| Monetization | — | Free with in-app purchases |
| Size | 208 MB | 521 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GreenRobot LLC](https://appshunter.io/developer/288448838) | [WPC](https://appshunter.io/developer/1681830786) |

## What reviewers say

### Open Space Game

[App page](https://appshunter.io/ios/app/open-space-game/id1499913239)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade To Premium | $4.99 | per month |
| Claim Another Moon Sphere | $0.99 | one-time |
| Upgrade Max Energy | $0.99 | one-time |
| Refill Energy To Max | $0.99 | one-time |
| Upgrade Cargo Limit +1,000kg | $0.99 | one-time |
| Upgrade Passenger Limit +1 | $0.99 | one-time |
| Small Mineral Pack | $0.99 | one-time |
| Large Mineral Pack | $2.99 | one-time |


### Solar System Sim

[App page](https://appshunter.io/ios/app/solar-system-sim/id6447612221)

Simulate and explore celestial bodies within our solar system and beyond. Create your own solar systems, experiment with gravity and physics, and observe orbital mechanics in action.

**Highlights:** Explore planets and moons, Visit nearby stars, Create custom solar systems, Gravity and physics simulation, Recalculate orbits, Newton's laws implementation

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HD Mars | $2.99 | one-time |
| HD Earth | $2.99 | one-time |
| HD Moon | $2.99 | one-time |
| No-ads | $3.99 | one-time |
| HD 3-body pack | $6.99 | one-time |

**What reviewers like**

- 🚀 Realistic simulation
- 🚀 Detailed solar system
- 🚀 Ability to create custom solar systems
- 🚀 Impressive graphics
- 🚀 Frequent updates

**What reviewers complain about**

- 🐛 Crashes and glitches
- 🔋 High battery consumption
- 💰 Excessive ads
- 🐛 Saving and loading issues
- 🐛 Unstable orbits

**Reported bugs**

- Planets/moons disappearing after saving and loading
- Bright flashes and screen distortions
- Planets/objects getting stuck inside stars
- Crashes when colliding or editing certain objects
- Inconsistent orbital mechanics and moons ejecting from planets

**Requested features**

- Add more galaxy and nebula textures
- Implement realistic supernova effects
- Allow customization of planet atmospheres and terrain
- Add binary star systems and rogue planets
- Introduce a galaxy maker and collision feature


## Frequently asked questions

### Is Open Space Game free?

Open Space Game is free to download, with in-app purchases available.

### Is Solar System Sim free?

Solar System Sim is free to download, with in-app purchases available.

### Do Open Space Game or Solar System Sim have ads?

Solar System Sim shows ads; Open Space Game does not.

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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.*