Open Space Game vs Solar System Sim
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Open Space Game
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In Open Space you can explore for minerals on The Moon and Mars, using those minerals, you can use a replicator on the moon to create objects you describe in text, and show it off to your moon neighbors. Fill up your sphere on the moon and you can occupy more than one sphere. Owning spheres and objects grants you virtual currency in the game daily. Play GridHack, a mini-game on the Moon. Participate in the Lunar Lounge and leave your comments on the game. Choose a spaceship to use during the game. Use refillable energy throughout the game to travel to new destinations. View your cargo, consisting of different types of minerals gathered throughout the game. You can explore the views from the Space Station, Earth, The Moon and Mars in this game, and try to top the Galactic leaderboard, with more features coming soon. Coming soon: Quest Command Center Coming soon: Configure and launch Spaceships Please view GreenRobot's Terms of Service: https://greenrobot.com/terms/
Solar System Sim
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.
- Explore planets and moons
- Visit nearby stars
- Create custom solar systems
- Gravity and physics simulation
- Recalculate orbits
- Newton's laws implementation
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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.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Open Space Game | Solar System Sim |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (4.3K ratings) — better |
| Positive reviews | — | 80.3% of reviews |
| Number of ratings | — | 4.3K — better |
| Update frequency | — | Every 4 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 208 MB | 521 MB |
| Age rating | 4+ | 4+ |
| Developer | GreenRobot LLC | WPC |
Bugs and requests
Open Space Game
Not enough reviews yet to summarise bugs or requests.
Solar System Sim
Reported bugs
5 issues- 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
10 requests- 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
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- 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
In-app purchases
Open Space Game
- Upgrade To Premium$4.991 Month
- Claim Another Moon Sphere$0.99
- Upgrade Max Energy$0.99
- Refill Energy To Max$0.99
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- Upgrade Cargo Limit +1,000kg$0.99
- Upgrade Passenger Limit +1$0.99
- Small Mineral Pack$0.99
- Large Mineral Pack$2.99
Solar System Sim
- HD Mars$2.99
- HD Earth$2.99
- HD Moon$2.99
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- No-ads$3.99
- HD 3-body pack$6.99
Questions
Is Open Space Game free?
Is Solar System Sim free?
Do Open Space Game or Solar System Sim have ads?
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