Comparison

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.

Head to head
About

Open Space Game

Explore celestial bodies like the Moon and Mars, mine for resources, and use a replicator to create custom objects. Earn virtual currency daily by owning in-game spheres and items. Engage in mini-games and connect with other players.

Highlights
  • Explore Moon and Mars
  • Mine for minerals
  • Text-based object creation
  • Earn virtual currency
  • Play mini-games
  • Leaderboard
  • Spaceship customization
Read full description

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/

About

Solar System Sim

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.

Highlights
  • Real-time gravity simulation
  • Build custom solar systems
  • First-person planet landing
  • Sculpt particle rings
  • Witness real eclipses
  • Explore nearby stars
Features
Read full description

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

Open Space Game4 screens
Solar System Sim4 screens

Verdict

The call

The clearest difference is rating: Solar System Sim at 4.5 against Open Space Game's 1.0. Solar System Sim also leads on ratings volume (4.5K vs 1) and iOS requirement (15.0 vs 17.5). Open Space Game's advantage is ads (none vs shown). On price, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

Solar System Sim holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Solar System Sim has 4.5K ratings behind it against 1, so its average is the more settled of the two.

Scorecard4 real differences · 6 level
Open Space Game versus Solar System Sim: the parameters behind the verdict, then further details
ParameterOpen Space GameSolar System Sim
PriceFreeFree
Rating1.0 (1 ratings)4.5 (4.5K ratings) — better
Positive reviews—80.9% of reviews
Number of ratings14.5K — better
Update frequency—Every 4 days
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.515.0 — better
Further details — not scored
Size208 MB527 MB
Age rating4+4+
DeveloperGreenRobot LLCWPC

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
Show 5 more
  • 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

8 purchases

Open Space Game

Subscriptions1
  • Upgrade To Premium$4.991 Month
One-time7
  • Claim Another Moon Sphere$0.99
  • Upgrade Max Energy$0.99
  • Refill Energy To Max$0.99
Show 4 more
  • Upgrade Cargo Limit +1,000kg$0.99
  • Upgrade Passenger Limit +1$0.99
  • Small Mineral Pack$0.99
  • Large Mineral Pack$2.99
5 purchases

Solar System Sim

One-time5
  • HD Mars$2.99
  • HD Earth$2.99
  • HD Moon$2.99
Show 2 more
  • No-ads$3.99
  • HD 3-body pack$6.99

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.
Which has better reviews, Open Space Game or Solar System Sim?
Solar System Sim is rated higher. Open Space Game averages 1.0 out of 5 from 1 ratings, while Solar System Sim averages 4.5 from 4.5K ratings.
Do Open Space Game or Solar System Sim have ads?
Solar System Sim shows ads; Open Space Game does not.

Other comparisons