# Earth Sandbox vs Gravity OB1

The clearest difference is in-app purchases: Earth Sandbox at none against Gravity OB1's 1. Gravity OB1's advantage is ads (none vs shown) and iOS requirement (13.4 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Gravity OB1 sells 1 one-off in-app purchase. Earth Sandbox asks for nothing beyond the download.

Earth Sandbox ships an update weekly, Gravity OB1 every 5 days. The most recent releases landed on October 5, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Earth Sandbox | Gravity OB1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/earth-sandbox/id6756494237/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 367 MB | 25 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Heechang Kim](https://appshunter.io/developer/485685857) | [Q8blog](https://appshunter.io/developer/380669318) |

## What reviewers say

### Earth Sandbox

[App page](https://appshunter.io/ios/app/earth-sandbox/id6756494237)

Explore the dynamic evolution of a planet by altering its core systems like climate and gravity. Trigger natural events and observe real-time population and ecosystem trends. This experimental simulation game offers unique outcomes with every interaction.

**Highlights:** Earth-focused environmental simulation, Interconnected climate and planetary systems, Dynamic natural events, Real-time population and ecosystem trends, Interactive experimentation tools, Clean visuals and intuitive controls

**Features:** macOS Compatibility

**In-app purchases:** none


### Gravity OB1

[App page](https://appshunter.io/ios/app/gravity-ob1/id6788852525)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full Game | $3.99 | one-time |


## Frequently asked questions

### Is Earth Sandbox free?

Earth Sandbox is free to download, with no in-app purchases.

### Is Gravity OB1 free?

Gravity OB1 is free to download, with in-app purchases available.

### Do Earth Sandbox or Gravity OB1 have ads?

Earth Sandbox shows ads; Gravity OB1 does not.

### Which is updated more often, Earth Sandbox or Gravity OB1?

Earth Sandbox ships an update weekly, and Gravity OB1 every 5 days. Most recently, Earth Sandbox was updated on October 5, 2026 and Gravity OB1 on September 28, 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.*