# Gravity! vs Universe Maker

The clearest difference is in-app purchases: Universe Maker at none against Gravity!'s 1. Universe Maker also leads on review sentiment (100% vs 74%) and iOS requirement (9.0 vs 15.6). Gravity!'s advantage is ratings volume (18 vs 6). On price, rating, ads and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.9 for Gravity! against 3.8 for Universe Maker. Both are backed by a comparable volume of ratings — 18 and 6 respectively. Written reviews are what separate them: 74% of Gravity!'s written reviews are positive against 100% of Universe Maker's.

## The numbers

| Metric | Gravity! | Universe Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (18 ratings)](https://appshunter.io/ios/app/gravity/id738871919/reviews)** | [3.8 (6 ratings)](https://appshunter.io/ios/app/universe-maker/id1039695856/reviews) |
| Number of ratings | **18** | 6 |
| Positive reviews | 73.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 17 MB | 2 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marc Davis](https://appshunter.io/developer/1010892850) | [Christopher Leet](https://appshunter.io/developer/1018548001) |

## 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 |


### Universe Maker

[App page](https://appshunter.io/ios/app/universe-maker/id1039695856)

Explore the potential histories and futures of a universe by adjusting its fundamental components. This educational tool allows users to experiment with radiation, matter, and dark energy to observe how these elements influence cosmic evolution.

**Highlights:** Simulate universe histories and futures, Tinker with universe composition, Observe cosmic evolution, Experiment with radiation, matter, and dark energy

**In-app purchases:** none


## Frequently asked questions

### Is Gravity! free?

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

### Is Universe Maker free?

Universe Maker is free to download, with no in-app purchases.

### Which has better reviews, Gravity! or Universe Maker?

Gravity! is rated higher. Gravity! averages 3.9 out of 5 from 18 ratings, while Universe Maker averages 3.8 from 6 ratings.

### Do Gravity! or Universe Maker have ads?

Neither Gravity! nor Universe Maker shows ads.

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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.*