Solar System Sim vs Cosmic Gravity Merge
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
Cosmic Gravity Merge
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Say goodbye to simple drop puzzles. Tilt your phone to manipulate gravity in this new physics-based merge puzzle game! Enjoy an immersive, neon-lit space experience completely free. [Game Overview] "Space Game" is a planet merge puzzle game that uses realistic physics. Crash planets of the same type into larger ones to evolve them into bigger ones. The rules are simple, but this space game features a unique action element where your hand movements are directly linked. [Key Features of This Game] - Control gravity with the gyro function: Hold the button in the bottom right of the screen and tilt your phone to make the planets slide along with gravity. Even when they almost join, you can tilt your hand to merge them. The unpredictable movements unique to physics-based games and the satisfying feeling of getting the moves you want will become addictive. - The ultimate "shake" feature: Once you've accumulated energy, shake your phone to shuffle the board! This is a risky move that can instantly turn a crisis into an opportunity. ・A beautifully shining neon universe. Vivid neon-colored planets stand out against a black background. The light effects and smooth movements that appear the moment you merge will take you on a time-losing journey through space. Features three modes ・CLASSIC: A basic mode where you must carefully consider your surroundings and aim for a high score. ・CHAOS: An unpredictable mode for advanced players, where physics go haywire. ・ZERO: Gravity disappears! A new, zero-gravity mode where planets drift in place. Stress-free design ・Completely free: Play until the end without any in-game purchases. ・Offline compatible: Play even in areas without a signal. [Recommended for] ・Fans of popular merge puzzles ・Enjoy physics simulation games ・Get bored of standard puzzle games ・Enjoy number puzzles like 2048 ・Enjoy space, stars, and neon designs ・Looking for brain training in your spare time
Screenshots
Verdict
The clearest difference is in-app purchases: Cosmic Gravity Merge at none against Solar System Sim's 5. Solar System Sim's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement 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. Solar System Sim sells 5 one-off in-app purchases. Cosmic Gravity Merge asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 22, 2026 and September 24, 2026 respectively.
| Parameter | Solar System Sim | Cosmic Gravity Merge |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4.3K ratings) — better | — |
| Positive reviews | 80.5% of reviews | — |
| Number of ratings | 4.3K — better | — |
| Update frequency | Every 4 days | Every 4 days |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 521 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | WPC | Shuhei Ota |
Bugs and 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
Cosmic Gravity Merge
Not enough reviews yet to summarise bugs or requests.
In-app purchases
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
Cosmic Gravity Merge
No in-app purchases
Questions
Is Solar System Sim free?
Is Cosmic Gravity Merge free?
Do Solar System Sim or Cosmic Gravity Merge have ads?
Which is updated more often, Solar System Sim or Cosmic Gravity Merge?
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