# Sandbox Planet vs Gravity Zen

The clearest difference is price: Sandbox Planet at Free against Gravity Zen's $0.99. Sandbox Planet also leads on ratings volume (304 vs 70). Gravity Zen's advantage is review sentiment (94% vs 52%) and ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Sandbox Planet is free to download; Gravity Zen costs $0.99 up front. Sandbox Planet sells 6 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 4.5. Both are backed by a comparable volume of ratings — 304 and 70 respectively. Written reviews point the same way: 52% of Sandbox Planet's written reviews are positive against 94% of Gravity Zen's.

Sandbox Planet ships an update every 3 months, Gravity Zen every 9 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Sandbox Planet | Gravity Zen |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.5 (304 ratings)](https://appshunter.io/ios/app/sandbox-planet/id1527841661/reviews) | **[4.8 (70 ratings)](https://appshunter.io/ios/app/gravity-zen/id1602081846/reviews)** |
| Number of ratings | **304** | 70 |
| Positive reviews | 51.7% of reviews | **93.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 119 MB | 13 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Tsang](https://appshunter.io/developer/416987065) | [Dominik Hauser](https://appshunter.io/developer/325836858) |

## What reviewers say

### Sandbox Planet

[App page](https://appshunter.io/ios/app/sandbox-planet/id1527841661)

Create and customize your own solar systems and planets. Emulate the development of the universe with highly detailed simulation tools. Build any celestial body you can imagine.

**Highlights:** Solar system simulation, Planet building, Universe emulation, Customizable creation, Celestial body design

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5000 GP | $1.99 | one-time |
| Remove Ad | $2.99 | one-time |
| 25000 GP | $5.99 | one-time |
| 50000 GP | $9.99 | one-time |
| 120000 GP | $19.99 | one-time |
| 200000 GP | $29.99 | one-time |

**What reviewers like**

- 👍 Very fun and enjoyable game
- ✨ Beautiful graphics
- 🌌 Great sandbox experience
- 🎮 Compatible with iOS 18
- 🌠 Ability to design planets

**What reviewers complain about**

- 💸 Expensive in-app purchases
- 💰 Pay-to-win mechanics
- 📉 Slow progression without spending
- 😩 Ads are frequent and intrusive
- ⏳ Takes too long to create planets

**Reported bugs**

- Advertisements have non-functional close buttons
- App crashes frequently
- Video ads for currency don't load
- Bug with GP conversion where it decreases
- Daytime interface is too bright

**Requested features**

- Random planets and stars should spawn
- Add currency earning methods
- Allow naming of planets
- Add more content
- Make the game harder


### 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 Sandbox Planet free?

Sandbox Planet 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, Sandbox Planet or Gravity Zen?

Gravity Zen is rated higher. Sandbox Planet averages 4.5 out of 5 from 304 ratings, while Gravity Zen averages 4.8 from 70 ratings.

### Do Sandbox Planet or Gravity Zen have ads?

Sandbox Planet shows ads; Gravity Zen does not.

### Which is updated more often, Sandbox Planet or Gravity Zen?

Sandbox Planet ships an update every 3 months, and Gravity Zen every 9 days. Most recently, Sandbox Planet was updated on November 1, 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.*