# Sand In a Box 2 vs Gravity Zen

The clearest difference is review sentiment: Gravity Zen at 94% against Sand In a Box 2's 25%. Gravity Zen also leads on rating (4.8 vs 1.6) and ads (none vs shown). Sand In a Box 2's advantage is price (Free vs $0.99) and iOS requirement (12.0 vs 15.0). On in-app purchases and device support there is nothing between them.

Sand In a Box 2 is free to download; Gravity Zen costs $0.99 up front. Sand In a Box 2 sells 3 one-off in-app purchases and Gravity Zen sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Gravity Zen holds the better App Store score, 4.8 against 1.6. That said, the two scores are not equally well evidenced: Gravity Zen has 70 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 25% of Sand In a Box 2's written reviews are positive against 94% of Gravity Zen's.

Sand In a Box 2 ships an update every 18 months, Gravity Zen every 9 days. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Sand In a Box 2 | Gravity Zen |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [1.6 (14 ratings)](https://appshunter.io/ios/app/sand-in-a-box-2-pixel-physics/id1470944878/reviews) | **[4.8 (70 ratings)](https://appshunter.io/ios/app/gravity-zen/id1602081846/reviews)** |
| Number of ratings | 14 | **70** |
| Positive reviews | 25.0% of reviews | **93.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 9 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 57 MB | 13 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Patryk Zielinski](https://appshunter.io/developer/373349357) | [Dominik Hauser](https://appshunter.io/developer/325836858) |

## What reviewers say

### Sand In a Box 2

[App page](https://appshunter.io/ios/app/sand-in-a-box-2-pixel-physics/id1470944878)

Explore a sandbox filled with sand, water, and new elements. Simulate complex interactions and observe heat dissipation with a thermal camera. Manipulate gravity and ambient temperature to create unique scenarios.

**Highlights:** 16 interactive elements, Heat dissipation simulation, Thermal camera with temperature scales, Adjustable ambient temperature, Gravity manipulation, Complex element interactions

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Medium Sand Refill | $0.99 | one-time |
| Big Sand Refill | $1.99 | one-time |
| Unlimited Sand | $4.99 | one-time |


### Gravity Zen

[App page](https://appshunter.io/ios/app/gravity-zen/id1602081846)

Observe small circles interacting with a central gravity field. Add numerous boxes to explore how they naturally settle into a stable arrangement. It's a simple yet captivating simulation.

**Highlights:** Gravity field simulation, Add multiple objects, Observe stable configurations, Interactive physics, Minimalist design

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Large tip | $2.99 | one-time |


## Frequently asked questions

### Is Sand In a Box 2 free?

Sand In a Box 2 is free to download, with in-app purchases available.

### Is Gravity Zen free?

Gravity Zen costs $0.99, and also offers in-app purchases.

### Which has better reviews, Sand In a Box 2 or Gravity Zen?

Gravity Zen is rated higher. Sand In a Box 2 averages 1.6 out of 5 from 14 ratings, while Gravity Zen averages 4.8 from 70 ratings.

### Do Sand In a Box 2 or Gravity Zen have ads?

Sand In a Box 2 shows ads; Gravity Zen does not.

### Which is updated more often, Sand In a Box 2 or Gravity Zen?

Sand In a Box 2 ships an update every 18 months, and Gravity Zen every 9 days. Most recently, Sand In a Box 2 was updated on October 23, 2026 and Gravity Zen on October 30, 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.*