# Planet Gravity vs Sandbox Planet

The clearest difference is price: Planet Gravity at Free against Sandbox Planet's $14.99. Planet Gravity also leads on in-app purchases (none vs 6) and ads (none vs shown). Sandbox Planet's advantage is review sentiment (53% vs 25%) and update cadence (every 3 months vs every 14 months). On device support and iOS requirement there is nothing between them.

Planet Gravity is free to download; Sandbox Planet costs $14.99 up front. Sandbox Planet sells 6 one-off in-app purchases. Planet Gravity asks for nothing beyond the download.

Planet Gravity ships an update every 14 months, Sandbox Planet every 3 months. The most recent releases landed on June 7, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Planet Gravity | Sandbox Planet |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | — | **[4.5 (300 ratings)](https://appshunter.io/ios/app/sandbox-planet/id1527841661/reviews)** |
| Number of ratings | — | **300** |
| Positive reviews | 25.0% of reviews | **52.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 118 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Niagara Mobile LLC](https://appshunter.io/developer/1039399999) | [Oscar Tsang](https://appshunter.io/developer/416987065) |

## What reviewers say

### Planet Gravity

[App page](https://appshunter.io/ios/app/planet-gravity/id995682820)

Explore the gravitational pull of different celestial bodies. Watch pendulums swing and collide under varying gravitational forces, offering a unique physics simulation experience.

**Highlights:** Select different planets for unique gravity, Observe pendulum collisions, Physics-based simulation, Educational planet facts, Interactive entertainment

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Planet Gravity free?

Planet Gravity is free to download, with no in-app purchases.

### Is Sandbox Planet free?

Sandbox Planet costs $14.99, and also offers in-app purchases.

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

Sandbox Planet shows ads; Planet Gravity does not.

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

Planet Gravity ships an update every 14 months, and Sandbox Planet every 3 months. Most recently, Planet Gravity was updated on June 7, 2026 and Sandbox Planet on September 21, 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.*