Comparison

Galaxy Space Simulator 3D vs Gravity OB1

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Galaxy Space Simulator 3D

Create and explore your own universe with a realistic 3D space simulator. Witness celestial bodies orbit, form asteroid belts, and customize planets with various textures and skins. Save, load, and share your cosmic creations with others.

Highlights
  • Realistic 3D graphics
  • Physics-based gravity simulation
  • Planet and star customization
  • Save, load, and pause functionality
  • Share creations online
  • Unlockable content through achievements
Features
Read full description

Create your own solar system with our immersive 3D and realistic space simulator for FREE! Galaxy Space Simulator is an immersive, fun, and addicting simulator with base on real astrophysical gravity law. You can watch in real time how a planet orbits the sun and how asteroid belt forms. It’s an educational activity that is so mesmerizing and entertaining for the whole family. === FEATURES OF GALAXY SPACE SIMULATOR: === * IMMERSIVE HIGH QUALITY 3D GRAPHIC Enjoy the immersive, realistic graphic. It really feels like you are in the outer space and observing the solar system from away. This app uses simple swipe and pinch to control the view. You can view the planetary orbits and track them. * FREE SIMULATOR Enjoy our 3D space simulator for FREE! You start with limited planets but you can unlock more by completing achievements. We add new achievements to unlock so you will never run out of things to do and explore. * REALISTIC SIMULATOR The movement of the sky objects are simulated based on how gravity works in the outer space and how each object pulling at each other depending on their mass. You can see how the planet orbits the sun and maybe collides with each other, how asteroid belt forms, and other space phenomenon. * CUSTOMIZATION Customize your planets and stars with textures and skins. You can also change the background of the scene. You can also adjust for speed, size, and location of the sky objects, as well as choose for random distribution. * HOW TO PLAY GUIDE You don’t need to feel overwhelmed. We explain the app control and functions within the app so you know how to create sky objects, follow the orbits, view guide, and more. * SAVE, LOAD, PAUSE AND RESUME You don’t have to worry of losing your solar system if you can’t finish it in one go. Save your project and load it later on. You can also pause and resume the solar system anytime. * SHARE ONLINE Do you want to impress your friends and family with your creation? Share your creation on social media. You can also share your solar system model with other users, find models by other users and modify them to create your own. You don’t have to be a sky gazer or a science fiction enthusiast to enjoy our space simulator app. This is a very fun and addicting activity to do anytime, anywhere. Don’t worry if you don’t know where or how to start. You can load other people’s solar systems and add your own elements to them as you like. Keep creating and experimenting and enjoy watching what will happen as the planets, stars, and asteroids moving and orbiting each other. You can witness planetary collisions and the evolution of the solar system you create as time goes by. It will certainly deepen our understanding about the space and universe. *** We appreciate all the feedback from our users. Please support Galaxy Space Simulator, 3D Solar System Simulator by leaving a rating and review. Don’t forget to share our universe sandbox app to your friends and family so they can enjoy it too!

About

Gravity OB1

Features
Read full description

GRAVITY OB1 turns orbital physics into pure arcade thrill. Sling your ship across a living solar system, ride the pull of planets and black holes, and master gravity itself — because the radar is your only map. THREE GAMES IN ONE - CRUISE — Pure flight. No weapons, no boosters. Just you, gravity, and one perfect slingshot to the target. - COMBAT — Full war. Dodge mines, missiles, and asteroid lasers. Boosters and shields at your side. - ASSAULT — Take the fight to the enemy. Dogfight alien ships with a twin-stick control scheme, lock into orbit around planets, and rain fire on your foes. MASTER GRAVITY Every shot is a puzzle. Planets bend your flight path, black holes swallow the careless, and the sun is always hungry. Learn to read the pull, thread the needle, and let physics carry you home. ORBIT LOCK Fly close to any planet and lock into a stable orbit — circle your target hands-free while your cannons and homing missiles pour fire into it. A gravity-powered gunship run like nothing else on mobile. A FLEET OF SHIPS Unlock 8 distinct ships, from the nimble Needle interceptor to the mighty Bastion battleship. Each flies differently — light and fast, or heavy and armored but harder to pull free of gravity's grip. 100 MISSIONS + SUPER NOVA Ten levels across every mode, each with escalating hazards: moving asteroids, black holes, orbiting worlds, and finally the endless waves of Super Nova. FEATURES - Real gravity physics — no two shots ever feel the same - Three completely different game modes - 8 unlockable ships with unique handling - 8 alien enemy types with distinct behaviors - Homing missiles, cannons, boosters, and shields - A tactical radar you'll learn to live by - Premium hand-crafted art and an original soundtrack Free to play the opening of every mode. Unlock the full campaign once — yours forever. Slingshot in. Master the pull. Clear the system.

Screenshots

Galaxy Space Simulator 3D4 screens
Gravity OB14 screens

Verdict

The call

The clearest difference is update cadence: Gravity OB1 at every 5 days against Galaxy Space Simulator 3D's every 5 months. On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Galaxy Space Simulator 3D sells 13 one-off in-app purchases and Gravity OB1 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Galaxy Space Simulator 3D ships an update every 5 months, Gravity OB1 every 5 days. The most recent releases landed on October 8, 2026 and September 28, 2026 respectively.

Scorecard1 real difference · 9 level
Galaxy Space Simulator 3D versus Gravity OB1: the parameters behind the verdict, then further details
ParameterGalaxy Space Simulator 3DGravity OB1
PriceFreeFree
Rating4.4 (457 ratings) — better—
Positive reviews39.5% of reviews—
Number of ratings457 — better—
Update frequencyEvery 5 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.4
Further details — not scored
Size219 MB25 MB
Age rating4+4+
DeveloperKrassimir KondarevQ8blog

Bugs and requests

Galaxy Space Simulator 3D

Reported bugs

4 issues
  • Perpetual loading screen
  • Planets and systems not functioning properly
  • Zooming and navigation issues
  • Frequent crashes and app not launching

Requested features

4 requests
  • Add a loading bar
  • Improve navigation and controls
  • Increase planet and system creation limits
  • Add more advanced features (black holes, wormholes, etc.)

Gravity OB1

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Galaxy Space Simulator 3D

One-time13
  • High Res Ceres$0.99
  • High Res Jupiter$0.99
  • Remove ads$0.99
Show 10 more
  • Skybox deep space$0.99
  • Skybox green nebula$0.99
  • High Res Earth$1.99
  • High Res Night Earth$1.99
  • Add 5 more planets$2.99
  • Skybox nebulas clash$2.99
  • Unlock asteroid belts$3.99
  • Premium planets bundle$3.99
  • Add 10 more planets$4.99
  • Unlock every feature in game!$14.99
1 purchases

Gravity OB1

One-time1
  • Unlock Full Game$3.99

Questions

Is Galaxy Space Simulator 3D free?
Galaxy Space Simulator 3D is free to download, with in-app purchases available.
Is Gravity OB1 free?
Gravity OB1 is free to download, with in-app purchases available.
Do Galaxy Space Simulator 3D or Gravity OB1 have ads?
Neither Galaxy Space Simulator 3D nor Gravity OB1 shows ads.
Which is updated more often, Galaxy Space Simulator 3D or Gravity OB1?
Galaxy Space Simulator 3D ships an update every 5 months, and Gravity OB1 every 5 days. Most recently, Galaxy Space Simulator 3D was updated on October 8, 2026 and Gravity OB1 on September 28, 2026.

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