# Gravity! vs Orbital Simulator

The clearest difference is rating: Orbital Simulator at 5.0 against Gravity!'s 3.9. Orbital Simulator also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs every 2 months). Gravity!'s advantage is ads (none vs shown) and ratings volume (18 vs 5). On price and device support there is nothing between them.

Both are free to download. Gravity! sells 1 one-off in-app purchase. Orbital Simulator asks for nothing beyond the download.

Orbital Simulator holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 18 and 5 respectively.

Gravity! ships an update every 2 months, Orbital Simulator fortnightly. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Gravity! | Orbital Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (18 ratings)](https://appshunter.io/ios/app/gravity/id738871919/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/orbital-simulator-explorer/id6511195732/reviews)** |
| Number of ratings | **18** | 5 |
| Positive reviews | 73.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 17 MB | 247 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Marc Davis](https://appshunter.io/developer/1010892850) | [Renzo Macedo](https://appshunter.io/developer/1403943580) |

## What reviewers say

### Gravity!

[App page](https://appshunter.io/ios/app/gravity/id738871919)

Simulate the forces of gravity by flinging particles and observing their interactions. Create celestial bodies like planets and black holes, and customize their properties. Explore vast cosmic simulations with intuitive zoom and pan controls.

**Highlights:** Gravity simulation, Particle interaction, Create solar systems, Add black holes, Adjust particle properties, Zoom and pan controls

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gravity! Extended Edition | $0.99 | one-time |


### Orbital Simulator

[App page](https://appshunter.io/ios/app/orbital-simulator-explorer/id6511195732)

Explore orbital mechanics through interactive simulations and real-time solar system data. Learn about Kepler's Laws, practice orbital maneuvers, and engage in mission objectives. Ideal for students and space enthusiasts.

**Highlights:** Interactive orbital simulations, Kepler's Laws visualization, Orbital maneuver practice, Real-time solar system view, Customizable orbital parameters, Detailed educational content, Mission-based challenges

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gravity! free?

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

### Is Orbital Simulator free?

Orbital Simulator is free to download, with no in-app purchases.

### Which has better reviews, Gravity! or Orbital Simulator?

Orbital Simulator is rated higher. Gravity! averages 3.9 out of 5 from 18 ratings, while Orbital Simulator averages 5.0 from 5 ratings.

### Do Gravity! or Orbital Simulator have ads?

Orbital Simulator shows ads; Gravity! does not.

### Which is updated more often, Gravity! or Orbital Simulator?

Gravity! ships an update every 2 months, and Orbital Simulator fortnightly. Most recently, Gravity! was updated on October 7, 2026 and Orbital Simulator on October 5, 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.*