# Solar System Sim — Space & Planet Physics Sandbox

> Gravity sandbox for simulating and exploring solar systems. (iPhone/iPad app by WPC.)

- Source: https://appshunter.io/ios/app/solar-system-sim/id6447612221 (this page in markdown: same URL + `.md`)
- Developer: [WPC](https://appshunter.io/developer/1681830786)
- Category: Games, Education, Casual, Simulation
- Price: Free with in-app purchases
- Rating: 4.50/5 from 4,073 App Store ratings · 1,034 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 517 MB
- Languages: American English
- Released: 2023-04-12
- Data updated: 2026-09-08
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/solar-system-sim/id6447612221/reviews.md

## What is Solar System Sim?

Zoom from a planet's surface out to distant galaxies, then reshape the whole system with your own hands.

Solar System Sim is a real-time gravity sandbox built on Newton's laws and real astronomical data. Every body you add, move or destroy recalculates the orbits of everything else, live.

• Smash worlds together: impact craters carve into the surface, firestorms sweep the globe, and glowing debris rains back down.
• Build your own universe: add planets, moons, asteroids and comets with their own size, mass and looks, or customise the ones already there.
• Land anywhere: drop to a first-person view on any planet's surface and experience its environment.
• Sculpt rings: add particle rings and watch gravity shape them in real time.
• Witness real eclipses: solar and lunar, with real-world astronomical precision.
• Follow comets: watch them streak past and interact with the bodies they meet.
• Leave the Solar System: travel to remarkable nearby stars and find them within the Milky Way.
• Feel the scale: see the true vastness of space, from a pebble-sized moon to the nearest galaxies.

Whether you're here to learn how gravity really works or just to break planets with it, explore at your own pace.

Start your cosmic adventure with Solar System Sim.

## Key features

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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## What do users think of Solar System Sim?

Overall sentiment: positive

**Pros**

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

**Cons**

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

**Commonly 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

**Most 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
- Implement a reverse time lapse option
- Add more speed options (128x, 256x, etc.)
- Introduce a population counter and life simulation for planets
- Allow custom city lights and vegetation on planets
- Add a Roche limit feature to observe tidal disruption

## Recent user reviews (10 of 1,034)

All indexed reviews: https://appshunter.io/ios/app/solar-system-sim/id6447612221/reviews.md

### 3/5 — Game ruining bugs

*2026-09-01, version 0.401*

The game itself is good I love the game however, there is a few bugs that absolutely ruin the game. One of the weird things that have happened is I pressed the un pause button once and the screen went black and I couldn’t see anything ruining the save and progress. Another bug is I was in the process of making a solar system when all the sudden when I load the save again the star is suddenly gone and multiple light years away. I don’t know why these bugs are happening but fixing them would be greatly appreciated. Ty for the good game.

### 1/5 — Crashes

*2026-09-01, version 0.401*

This crashed a looot why this copy of solar smash crashes

### 4/5 — Solar system sim

*2026-08-30, version 0.401*

Very fun too play when you are bored but a little unrealistic

### 4/5 — Rieon

*2026-08-30, version 0.401*

I love your game but can you make it more realistic and can you make flashback of how a solar system was born, but I love your game just make it more realistic and add more stuff

### 5/5 — Make custom systems have 2048x speed!

*2026-08-30, version 0.401*

The limit 64x just feels to slow, please make it faster for custom systems. I do understand that orbits may be inaccurate but it would be nice to have that 2048x option open! Please enable!🙏

### 1/5 — Pornography ads

*2026-08-30, version 0.401*

Says for ages 4+ but shows ads for pornography!?? How is this game for younger kids?? My grandson loves the solar system games but should not be subject to watching adults content!

### 5/5 — Update more.

*2026-08-30, version 0.401*

Update more.

### 5/5 — Best Solar system game!

*2026-08-29, version 0.401*

This Sandbox Space game is wonderful. Also very good extra content. Recommend thy you guys should add more solar system like the tau ceti system or other solar system!

### 3/5 — Bug I found while playing Solar System Sim

*2026-08-28, version 0.401*

I just got back to playing this game. But that's not the point.
For some reason, when I drive a spaceship in the game, it's quite buggy. And when I do get in a spaceship in this game, I can't exit out of it. Please fix!

### 5/5 — Best game ever

*2026-08-26, version 0.401*

So wpc I’ve seen your channel make a video about this update I can make mars habitable now and I love your devs five stars

## Frequently asked questions about Solar System Sim

### What can I do in this solar system simulator?

You can explore existing celestial bodies in our solar system, including planets and moons, and even visit nearby stars. The app also allows you to create your own solar systems by adding or modifying celestial bodies.

### How does the simulation work?

The simulation acts as a gravity and physics sandbox. It recalculates the orbits of celestial bodies based on Newton's laws of motion and gravity, providing a realistic physics-based experience.

### Is this app free to use?

The app is free to download and use, but it does contain in-app purchases and advertisements. These may offer additional features or enhance the user experience.

### What kind of celestial bodies can I simulate?

You can explore and simulate planets and moons within our solar system, as well as visit nearby stars and observe their positions in the Milky Way. You can also add new bodies or modify existing ones to create unique solar systems.

## Version history (last 5 releases)

### 0.401 — 2026-08-25

- Climate panel: ice caps, sea level, vegetation and volcanism
- You can now flood Earth completely and its city lights will go out when drowned or frozen.
- Heat map of local surface temperatures
- Impacts melt ice and scorch the ground
- 3D tsunamis adapt to environment
- Glowing lava lakes, even on cold worlds
- Correct °C/°F for your region
- Bug fixes
- Save/load fixes

### 0.394 — 2026-08-14

- New Climate panel: set any planet's temperature, ice caps, sea level, vegetation and volcanism
- Watch it live: ice caps grow, seas drain, deserts spread, land melts
- Heat map of local surface temperatures
- Impacts melt ice and scorch the ground
- 3D tsunamis adapt to environment
- Glowing lava lakes, even on cold worlds
- Correct °C/°F for your region
- Save/load fixes

### 0.390 — 2026-07-31

• 3D tsunamis after collisions
• 16 new moons for Jupiter and Saturn
• Irregular shapes for asteroids and comets
• 8 new bodies: ringed Quaoar & Chariklo, Orcus, Gonggong, Bennu, Ryugu, Eros, Kamo'oalewa
• 2 new comets
• Speed up to 2048x, backward time to -2048x (Kepler mode only)
• Orbit helper: force-lock moons
• More stable n-body mode, better performance

### 0.385 — 2026-07-28

• 3D tsunamis after collisions
• 16 new moons for Jupiter and Saturn
• Irregular shapes for asteroids and comets
• 8 new bodies: ringed Quaoar & Chariklo, Orcus, Gonggong, Bennu, Ryugu, Eros, Kamo'oalewa
• 2 new comets
• Speed up to 2048x, backward time to -2048x (Kepler mode only)
• Orbit helper: force-lock moons
• More stable n-body mode, better performance

### 0.381 — 2026-07-27

• 3D tsunamis after collisions
• 16 new moons for Jupiter and Saturn
• Irregular shapes for asteroids and comets
• 8 new bodies: ringed Quaoar & Chariklo, Orcus, Gonggong, Bennu, Ryugu, Eros, Kamo'oalewa
• 2 new comets
• Speed up to 2048x, backward time to -2048x (Kepler mode only)
• Orbit helper: force-lock moons
• More stable n-body mode, better performance

## Apps similar to Solar System Sim

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Pocket Galaxy: Gravity Sandbox](https://appshunter.io/ios/app/pocket-galaxy-gravity-sandbox/id1248321746) | 4.6 (25,417) | Free | Games |
| [Solar Smash](https://appshunter.io/ios/app/solar-smash/id1495723103) | 4.8 (389,200) | Free | Games |
| [Spaceflight Simulator](https://appshunter.io/ios/app/spaceflight-simulator/id1308057272) | 4.8 (97,457) | Free | Games |
| [Pocket Galaxy: Space Sandbox](https://appshunter.io/ios/app/pocket-galaxy-space-sandbox/id1214937203) | 4.8 (9,937) | $3.99 | Games |
| [TerraGenesis - Space Settlers](https://appshunter.io/ios/app/terragenesis-space-settlers/id1039841501) | 4.6 (32,596) | Free | Games |
| [Water Physics Simulation](https://appshunter.io/ios/app/water-physics-simulation/id1562726050) | 4.2 (4,544) | Free | Games |

## More apps by WPC

- [星系模拟器](https://appshunter.io/ios/app/id6450872508)
- [Ship Maneuvering Simulator](https://appshunter.io/ios/app/ship-maneuvering-simulator/id6475722175)
- [Space Crash Simulator](https://appshunter.io/ios/app/space-crash-simulator/id6742357679)

All apps by WPC: https://appshunter.io/developer/1681830786

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*