Solar System Sim

Solar System Sim

Space & Planet Physics Sandbox

4.4K ratings
1245 reviews
Free
In-App PurchasesWith Ads

Details

Released
April 12, 2023
Updated
November 2, 2026

Features

Solar System Sim video #1 for iPhone
Solar System Sim video #2 for iPhone
Solar System Sim video #3 for iPhone
Solar System Sim screenshot #4 for iPhone
Solar System Sim screenshot #5 for iPhone
Solar System Sim screenshot #6 for iPhone
Solar System Sim screenshot #7 for iPhone
Solar System Sim screenshot #8 for iPhone
Solar System Sim screenshot #9 for iPhone
Solar System Sim screenshot #10 for iPhone
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About

Explore the vastness of space, from planet surfaces to distant galaxies. This real-time gravity sandbox allows you to build and reshape entire solar systems using real astronomical data and physics. Experience the scale of the universe and witness cosmic events firsthand.

✓Real-time gravity simulation
✓Build custom solar systems
✓First-person planet landing
✓Sculpt particle rings
✓Witness real eclipses
✓Explore nearby stars
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What users say about Solar System Sim

See all reviews
+2

What's New in Solar System Sim

0.428

November 2, 2026

• Voyager 1 & 2 as detailed 3D probes, dish aimed at Earth, Golden Record on board • Zoom in to metres on small objects like the Voyagers • Placing a small body flies the camera to it • Black hole fixes • Stars spin at their real speeds • Recently added: gas giant impacts, spin flattening, tidal pull reshaping, 30 constellation stars, typable Find • Fixes: labels up close, smoother stars on phones, crashes

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4

Subscriptions & In-App Purchases

$2.99

HD Mars

High-Res texture and height maps for Mars

User reviews

Great game and I love it the only reason it’s not getting 5 stars is because of what’s below

I love the game but, add like made up stars and systems, planets that might not exist orbiting real stars, vice versa (real planets orbiting stars that might not exist) and etc so that there is a lot more things and not just stars with no planets (except if they are close stars to the sun and if they don’t have planets keep it that way cause if u just add made up things to popular or well known stars/ planets it might cause anger) and just in general add more stuff even if it doesn’t exist. Also if there is a new star/planet discovered, but there is a made up one in its relative position (if that somehow even happens :P) then replace it with the real one unless it’s a community loved made up star ask for a vote or something to replace it with the real star/planet, or to keep the made up one and also please pay attention to my reviews cause if u actually notice and tell me u noticed things I could be like ur anonymous play tester and we could communicate through something idk but I have good ideas in my opinion and if u do want more of my ideas or to test them for ur game i would love to do that. (One problem, im not available 24/7, i got school to do but if i am online or smth idk how u will check u can ask me for some ideas if u want and i can see what the game needs) and also add made up galaxies and stars/planets/planetary systems within them including if the galaxy isn’t made up but you didn’t add planets or anything just make some up and please would you fix the scale of black holes, neutron stars and stuff (especially the supermassive black holes like Sagittarius A* it looks like a tiny little black hole that would be as if you took an average persons mass and made it into a black hole 😭) cya!1!
Also make it to where if you add enough mass to a gas giant it ignites into a star and also pls add temperature sliders to have an temp you want (no limits please unless there is something that would make limits more reasonable than not having one)
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Ideas of Mine 2 💡

Hey WPCons, me again and I have a few more ideas!

1) BLACK HOLE STARS.
Make a fourth outcome with supernovae, Black Hole stars. If a star has a whole ton of mass and radius, when going supernova, it will only shed one outer layer of the host star and a black hole will be visible inside ripping matter from all sides.

2) RADIO VIEW FOR GIANT RADIO GALAXYS -GRG’S-

Make a telescope mode for galaxies with a new addition in the customization panel, a GRG mode, where giant funnels of matter only visible in the new radio telescope mode sprout from the galaxy’s black hole. Kind of like big, funnel relativistic jets.

3) HELIOSPHERE REMODEL + CUSTOMIZATION PANEL ADDON.
Remodel the heliosphere to have an orange-ish color that radiates across the bow shock, also add a Heliopause option in the heliosphere size panel and you can edit how far away you want it to be where there is a second bow shock not to far from the first one and it radiates a pinkish red across the bubble.

4) BIG BANG OPTION.
Pls add a super dense singularity point in the object selection when adding an object to the simulation, and give it a big bang option with a super bright and cool looking explosion!

That’s all and cya next time, bye bye!
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Give me the updates

Now the stars look ugly fix it

🌌 Major Feature Review: The "Deep Physics, Climate & Tidal Evolution" Update

This is a comprehensive feature request aimed at expanding the game's core engine. While Solar System Sim excels at orbital mechanics and gravity sandboxing, implementing these features would bridge the gap between astrophysics and planetary geology—turning the game into the ultimate planet evolution simulator.

1. Thermodynamic, Hydro-Dynamics & Customizable Settings

• Custom Settings (Temperature & Sea Level): Add a settings toggle allowing players to choose their preferred units of measurement globally. Users can switch between Fahrenheit (°F), Celsius (°C), and Kelvin (K) for temperature, alongside tracking sea levels strictly in feet or meters based on personal preference.
• Real-Time Glacial Melting & Flooding:
• Rising Temperatures: If a planet is placed closer to a star or heated by a cosmic laser, polar ice caps physically shrink and melt, causing sea levels to rise automatically.
• Low-Elevation Flooding: Water grids must dynamically overflow onto low-lying landmasses and continents in real-time. Conversely, cooling the planet down freezes the water back into ice sheets, causing sea levels to drop.

2. Gravitational Tidal Waves & Proximity Physics

• Distance-Based Tidal Surge: Planetary oceans should directly react to the mass and proximity of orbiting moons.
• Moon Closer = Rising Tidal Waves: Moving a moon (like Earth's Moon) closer to its parent planet increases the gravitational pull on its fluids. This triggers massive, dynamic tidal waves that swell toward the moon, drowning coastlines as the planet rotates.
• Moon Farther = Weakened Tides: Moving the moon away relaxes the gravitational grip, flattening the oceans and lowering the global tide levels back to a baseline.
• Tidal Bulge Flooding: Extreme proximity will lock the planet's water into a permanent, massive bulge facing the moon—leaving one hemisphere completely dry while deeply submerging continents on the facing side.

3. Material Siphoning & Mass Theft (Roche Limit Physics)

• Gravitational Siphoning: When a high-gravity object (like a compact star, neutron star, or black hole) passes close to a smaller neighbor, it crosses the Roche limit and strips material away.
• Dynamic Scaling:
• The taking object absorbs the flying debris stream, showing a live increase in its mass and physical radius.
• The losing object visibly shrinks, loses mass, and can be stripped completely down to its bare iron or silicate core.

4. Atmospheric Burn & Vaporization Physics

• Frictional Slicing & Glow: Small asteroids, debris, or colliding planets cutting into a thick atmosphere will experience extreme heat friction. The objects should glow, trail fire, and physically slice through cloud layers—vaporizing into gas before they ever touch the crust.
• Impact Vapor Waves: High-energy impacts into ocean grids instantly flash-boil local surface water, driving a localized drop in sea levels. This evaporated water turns into dense atmospheric moisture, triggering heavy global storm cycles and massive secondary flooding.

5. Collision-Driven Momentum & Custom Belts

• Automatic Obliquity Shifts: Kinetic impacts must automatically alter a planet’s angular momentum. Off-center strikes will dynamically knock its axial tilt off course, permanently alter its seasons, and speed up or slow down its rotation velocity.
• Advanced Custom Belt Editor: An expansion of the ring tool, allowing players to drag and drop custom asteroid belts or icy Kuiper belts around stars, complete with custom particle density, asset sizes, and orbital drift speeds.

6. Weather Layers & Surface Geology

• Dynamic Cloud Movement: Atmospheric clouds should be fluid-driven textures that actively swirl across the globe based on temperature variations, wind currents, and atmospheric pressure systems.
• Tectonic Boundary Systems: Implement basic crust maps that determine where earthquakes, rift valleys, and mountain ridges form.
• Tidal Friction Volcanism: Moons caught in extreme gravitational tug-of-wars (e.g., orbiting too close to a gas giant) generate intense internal core friction. This triggers massive volcanic activity, crackling lava oceans, and magma eruptions on the surface.
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It scared me

I went near an asteroid and my iPad started buzzing and beeping like crazy

Developer apps

User experience

🐞

Reported Bugs

5 issues

Planets/moons disappearing after saving and loading

Bug

Bright flashes and screen distortions

Bug

Planets/objects getting stuck inside stars

Bug

Crashes when colliding or editing certain objects

Bug

Inconsistent orbital mechanics and moons ejecting from planets

Bug
✨

Requested Features

10 requests

Add more galaxy and nebula textures

Feature

Implement realistic supernova effects

Feature

Allow customization of planet atmospheres and terrain

Feature

Add binary star systems and rogue planets

Feature

Introduce a galaxy maker and collision feature

Feature

Implement a reverse time lapse option

Feature

Add more speed options (128x, 256x, etc.)

Feature

Introduce a population counter and life simulation for planets

Feature

Allow custom city lights and vegetation on planets

Feature

Add a Roche limit feature to observe tidal disruption

Feature

FAQ

What is Solar System Sim?

Solar System Sim is a real-time gravity sandbox game that uses Newton's laws and real astronomical data to simulate solar systems. You can build your own universe, smash worlds together, and explore planets from a first-person view.

Can I play Solar System Sim offline?

The provided data does not specify whether Solar System Sim supports offline play. However, its real-time simulation and potential need for astronomical data might suggest an online requirement for full functionality.

Does Solar System Sim have ads?

Yes, Solar System Sim contains advertisements. Users have reported excessive ads as a con, impacting the user experience.

What devices is Solar System Sim available on?

Solar System Sim is available on iPhone, iPad, and iPod devices.

How often is Solar System Sim updated?

Solar System Sim was last updated on November 2, 2026, with version 0.428. Frequent updates are listed as a pro by users, indicating ongoing development.

What is the age rating for Solar System Sim?

Solar System Sim has an age rating of 4+, making it suitable for young children and older users alike.

What do users like most about Solar System Sim?

Users praise Solar System Sim for its realistic simulation, detailed solar system creation, impressive graphics, and frequent updates. The ability to create custom solar systems is a significant highlight.

Are there any known issues with Solar System Sim?

Some users have reported issues with Solar System Sim, including crashes and glitches, high battery consumption, saving and loading problems, and unstable orbits. These are noted as cons in user reviews.