# Universe Gravity Simulator 3D vs Solar System Sim

The clearest difference is review sentiment: Solar System Sim at 80% against Universe Gravity Simulator 3D's 43%. Solar System Sim also leads on rating (4.5 vs 4.0) and ratings volume (4.1K vs 128). Universe Gravity Simulator 3D's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Universe Gravity Simulator 3D sells 1 one-off in-app purchase and Solar System Sim sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Solar System Sim holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Solar System Sim has 4.1K ratings behind it against 128, so its average is the more settled of the two. Written reviews point the same way: 43% of Universe Gravity Simulator 3D's written reviews are positive against 80% of Solar System Sim's.

Universe Gravity Simulator 3D ships an update every 5 weeks, Solar System Sim every 3 weeks. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Universe Gravity Simulator 3D | Solar System Sim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (128 ratings)](https://appshunter.io/ios/app/universe-gravity-simulator-3d/id1613476121/reviews) | **[4.5 (4.1K ratings)](https://appshunter.io/ios/app/solar-system-sim/id6447612221/reviews)** |
| Number of ratings | 128 | **4.1K** |
| Positive reviews | 42.9% of reviews | **79.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 235 MB | 512 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KUNHAR GAMES LTD](https://appshunter.io/developer/1613476123) | [WPC](https://appshunter.io/developer/1681830786) |

## What reviewers say

### Universe Gravity Simulator 3D

[App page](https://appshunter.io/ios/app/universe-gravity-simulator-3d/id1613476121)

Explore and shape the cosmos in this 3D space simulator. Create galaxies, destroy planets, and engage in epic space battles. Experience realistic physics and stunning visuals as you journey through star realms.

**Highlights:** Realistic physics engine, Dynamic universe creation, Immersive 3D environments, Gravity simulation, Solar system exploration, Interplanetary collisions, Space combat missions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $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 Universe Gravity Simulator 3D free?

Universe Gravity Simulator 3D 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.

### Which has better reviews, Universe Gravity Simulator 3D or Solar System Sim?

Solar System Sim is rated higher. Universe Gravity Simulator 3D averages 4.0 out of 5 from 128 ratings, while Solar System Sim averages 4.5 from 4.1K ratings.

### Do Universe Gravity Simulator 3D or Solar System Sim have ads?

Solar System Sim shows ads; Universe Gravity Simulator 3D does not.

### Which is updated more often, Universe Gravity Simulator 3D or Solar System Sim?

Universe Gravity Simulator 3D ships an update every 5 weeks, and Solar System Sim every 3 weeks. Most recently, Universe Gravity Simulator 3D was updated on September 20, 2026 and Solar System Sim on September 24, 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.*