# Universe Gravity Simulator 3D vs Planet Sylvia

The clearest difference is review sentiment: Planet Sylvia at 100% against Universe Gravity Simulator 3D's 43%. Planet Sylvia also leads on update cadence (every 3 days vs every 5 weeks). Universe Gravity Simulator 3D's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Universe Gravity Simulator 3D sells 1 one-off in-app purchase and Planet Sylvia sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Universe Gravity Simulator 3D ships an update every 5 weeks, Planet Sylvia every 3 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Universe Gravity Simulator 3D | Planet Sylvia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (144 ratings)](https://appshunter.io/ios/app/universe-gravity-simulator-3d/id1613476121/reviews)** | — |
| Number of ratings | **144** | — |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 235 MB | 514 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KUNHAR GAMES LTD](https://appshunter.io/developer/1613476123) | [Ali YUCE](https://appshunter.io/developer/1653452885) |

## What reviewers say

### Universe Gravity Simulator 3D

[App page](https://appshunter.io/ios/app/universe-gravity-simulator-3d/id1613476121)

Explore and shape the cosmos in this 3D space simulator. Create galaxies, destroy planets, and engage in epic space battles. Experience realistic physics and stunning visuals as you journey through star realms.

**Highlights:** Realistic physics engine, Dynamic universe creation, Immersive 3D environments, Gravity simulation, Solar system exploration, Interplanetary collisions, Space combat missions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### Planet Sylvia

[App page](https://appshunter.io/ios/app/planet-sylvia/id6680194211)

Embark on a cosmic adventure to colonize planets, build bases, and upgrade your spacecraft. Explore a vast universe, gather resources, and uncover the secrets of uncharted worlds.

**Highlights:** Establish bases on uncharted worlds, Gather and manage resources, Upgrade and customize spacecraft, Unlock and customize specialized ships, Explore unique planets and their mysteries, Develop adaptive strategies for diverse environments

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diamond Pack 1 | $0.99 | one-time |
| Diamond Pack 2 | $3.99 | one-time |
| Promo Pack | $4.99 | one-time |
| Diamond Pack 3 | $9.99 | one-time |
| Diamond Pack 4 | $19.99 | one-time |
| Diamond Pack 5 | $39.99 | one-time |


## Frequently asked questions

### Is Universe Gravity Simulator 3D free?

Universe Gravity Simulator 3D is free to download, with in-app purchases available.

### Is Planet Sylvia free?

Planet Sylvia is free to download, with in-app purchases available.

### Do Universe Gravity Simulator 3D or Planet Sylvia have ads?

Planet Sylvia shows ads; Universe Gravity Simulator 3D does not.

### Which is updated more often, Universe Gravity Simulator 3D or Planet Sylvia?

Universe Gravity Simulator 3D ships an update every 5 weeks, and Planet Sylvia every 3 days. Most recently, Universe Gravity Simulator 3D was updated on November 7, 2026 and Planet Sylvia on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*