# Topia World Builder vs Universe Gravity Simulator 3D

The clearest difference is price: Universe Gravity Simulator 3D at Free against Topia World Builder's $1.99. Universe Gravity Simulator 3D also leads on rating (4.0 vs 3.6). Topia World Builder's advantage is in-app purchases (none vs 1) and review sentiment (57% vs 43%). On ratings volume, update cadence, ads and device support there is nothing between them.

Universe Gravity Simulator 3D is free to download; Topia World Builder costs $1.99 up front. Universe Gravity Simulator 3D sells 1 one-off in-app purchase. Topia World Builder asks for nothing beyond the download.

Universe Gravity Simulator 3D holds the better App Store score, 4.0 against 3.6. Both are backed by a comparable volume of ratings — 236 and 141 respectively. Written reviews complicate that: 57% of Topia World Builder's written reviews are positive against 43% of Universe Gravity Simulator 3D's, so the app with the better star average is not the one people write more warmly about.

Topia World Builder ships an update every 6 weeks, Universe Gravity Simulator 3D every 5 weeks. Both last shipped on October 23, 2026.

## The numbers

| Metric | Topia World Builder | Universe Gravity Simulator 3D |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.6 (236 ratings)](https://appshunter.io/ios/app/topia-world-builder/id534282109/reviews) | **[4.0 (141 ratings)](https://appshunter.io/ios/app/universe-gravity-simulator-3d/id1613476121/reviews)** |
| Number of ratings | **236** | 141 |
| Positive reviews | **57.2% of reviews** | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#145** | — |
| Size | 57 MB | 235 MB |
| Requires iOS | **5.1.1** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Crescent Moon Games LLC](https://appshunter.io/developer/370521012) | [KUNHAR GAMES LTD](https://appshunter.io/developer/1613476123) |

## What reviewers say

### Topia World Builder

[App page](https://appshunter.io/ios/app/topia-world-builder/id534282109)

**Currently charting:** #145 Top Paid · Family (US App Store)

Shape a vibrant planet as a divine creator. Sculpt landscapes, grow forests, and populate your world with diverse animal life. Witness ecosystems evolve as you manage your creation.

**Highlights:** Create mountains, valleys, rivers, and oceans, Spawn and manage large animal herds, Observe animal interactions and ecosystems, Save and edit worlds, Customize land, water, and sky colors, Supports landscape and portrait modes

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Smooth and responsive
- 👍 Beautiful graphics
- 🌳 Relaxing sandbox experience

**What reviewers complain about**

- 🐛 Unbalanced animal populations
- 🔍 Lack of content and features
- 💤 Gets boring quickly

**Reported bugs**

- Birds getting stuck over the ocean
- Land animals drowning in water
- Inconsistent controls and UI

**Requested features**

- Add humans and civilization building
- Introduce natural disasters and weather effects
- Expand animal and plant diversity
- Improve ecosystem balance and predator-prey dynamics
- Implement saving and loading of created worlds


### 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 |


## Frequently asked questions

### Is Topia World Builder free?

Topia World Builder costs $1.99, with no in-app purchases.

### Is Universe Gravity Simulator 3D free?

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

### Which has better reviews, Topia World Builder or Universe Gravity Simulator 3D?

Universe Gravity Simulator 3D is rated higher. Topia World Builder averages 3.6 out of 5 from 236 ratings, while Universe Gravity Simulator 3D averages 4.0 from 141 ratings.

### Do Topia World Builder or Universe Gravity Simulator 3D have ads?

Neither Topia World Builder nor Universe Gravity Simulator 3D shows ads.

### Which is updated more often, Topia World Builder or Universe Gravity Simulator 3D?

Topia World Builder ships an update every 6 weeks, and Universe Gravity Simulator 3D every 5 weeks. Most recently, Topia World Builder was updated on October 23, 2026 and Universe Gravity Simulator 3D on October 23, 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.*