Asteroid Defender vs Solar System Sim
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Asteroid Defender
Engage in classic arcade-style gameplay to protect Earth from incoming asteroids. Tap to steer and hold to accelerate your ship's spin to destroy threats before they reach the planet.
- Classic arcade action
- Tap to change direction
- Hold to spin faster
- Protect Earth from asteroids
- Simple controls
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Enjoy some classic arcade-like action with a new twist. Tap to change directions hold to spin faster. Try and keep the asteroids from hitting earth and ending all civilization.
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 rating: Asteroid Defender at 5.0 against Solar System Sim's 4.5. Asteroid Defender also leads on in-app purchases (none vs 5) and ads (none vs shown). Solar System Sim's advantage is update cadence (every 2 weeks vs every 4 months) and ratings volume (4.2K vs 5). On price 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. Solar System Sim sells 5 one-off in-app purchases. Asteroid Defender asks for nothing beyond the download.
Asteroid Defender holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Solar System Sim has 4.2K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of Asteroid Defender's written reviews are positive against 80% of Solar System Sim's.
Asteroid Defender ships an update every 4 months, Solar System Sim every 2 weeks. The most recent releases landed on September 9, 2026 and October 3, 2026 respectively.
| Parameter | Asteroid Defender | Solar System Sim |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | 4.5 (4.2K ratings) |
| Positive reviews | 100.0% of reviews — better | 80.0% of reviews |
| Number of ratings | 5 | 4.2K — better |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 126 MB | 514 MB |
| Age rating | 4+ | 4+ |
| Developer | IMABEAR STUDIOS LLC | WPC |
Customer experience
Asteroid Defender
Solar System Sim
Bugs and requests
Asteroid Defender
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
Asteroid Defender
No 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
Questions
Is Asteroid Defender free?
Is Solar System Sim free?
Which has better reviews, Asteroid Defender or Solar System Sim?
Do Asteroid Defender or Solar System Sim have ads?
Which is updated more often, Asteroid Defender or Solar System Sim?
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