# Gravity! vs Parametric Creature

The clearest difference is price: Gravity! at Free against Parametric Creature's $1.99. Parametric Creature's advantage is rating (5.0 vs 3.9) and in-app purchases (none vs 1). On ratings volume, ads, device support and iOS requirement there is nothing between them.

Gravity! is free to download; Parametric Creature costs $1.99 up front. Gravity! sells 1 one-off in-app purchase. Parametric Creature asks for nothing beyond the download.

Parametric Creature holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 18 and 10 respectively. Written reviews point the same way: 74% of Gravity!'s written reviews are positive against 100% of Parametric Creature's.

## The numbers

| Metric | Gravity! | Parametric Creature |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [3.9 (18 ratings)](https://appshunter.io/ios/app/gravity/id738871919/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/parametric-creature-lab/id1594971770/reviews)** |
| Number of ratings | **18** | 10 |
| 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** | Paid |
| Size | 17 MB | 142 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marc Davis](https://appshunter.io/developer/1010892850) | [Latent Cat Inc](https://appshunter.io/developer/1789881663) |

## 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 |


### Parametric Creature

[App page](https://appshunter.io/ios/app/parametric-creature-lab/id1594971770)

Explore complex bionic systems with over 15,000 particles. Adjust eight parameters to observe emergent group behaviors inspired by nature, from cell division to bird migration. This app uses advanced GPU algorithms for real-time simulation, offering a glimpse into life and biodiversity.

**Highlights:** 15,000+ particle simulation, Eight adjustable parameters, Bionic system exploration, Real-time GPU algorithms, Metaphor of life and biodiversity, Complex emergent behaviors

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Gravity! free?

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

### Is Parametric Creature free?

Parametric Creature costs $1.99, with no in-app purchases.

### Which has better reviews, Gravity! or Parametric Creature?

Parametric Creature is rated higher. Gravity! averages 3.9 out of 5 from 18 ratings, while Parametric Creature averages 5.0 from 10 ratings.

### Do Gravity! or Parametric Creature have ads?

Neither Gravity! nor Parametric Creature 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.*