# Solar System Sim vs Water Box

The clearest difference is rating: Water Box at 4.8 against Solar System Sim's 4.5. Water Box also leads on review sentiment (93% vs 81%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Solar System Sim sells 5 one-off in-app purchases and Water Box sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Water Box holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 4.3K and 1.8K respectively. Written reviews point the same way: 81% of Solar System Sim's written reviews are positive against 93% of Water Box's.

Solar System Sim ships an update every 5 days, Water Box every 9 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Solar System Sim | Water Box |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (4.3K ratings)](https://appshunter.io/ios/app/solar-system-sim/id6447612221/reviews) | **[4.8 (1.8K ratings)](https://appshunter.io/ios/app/water-box-physics-sandbox/id6741103044/reviews)** |
| Number of ratings | **4.3K** | 1.8K |
| Positive reviews | 80.5% of reviews | **92.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 9 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 522 MB | 87 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [WPC](https://appshunter.io/developer/1681830786) | [Lukas Oertel](https://appshunter.io/developer/1562391231) |

## What reviewers say

### Solar System Sim

[App page](https://appshunter.io/ios/app/solar-system-sim/id6447612221)

Simulate and explore celestial bodies within our solar system and beyond. Create your own solar systems, experiment with gravity and physics, and observe orbital mechanics in action.

**Highlights:** Explore planets and moons, Visit nearby stars, Create custom solar systems, Gravity and physics simulation, Recalculate orbits, Newton's laws implementation

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HD Mars | $2.99 | one-time |
| HD Earth | $2.99 | one-time |
| HD Moon | $2.99 | one-time |
| No-ads | $3.99 | one-time |
| HD 3-body pack | $6.99 | one-time |

**What reviewers like**

- 🚀 Realistic simulation
- 🚀 Detailed solar system
- 🚀 Ability to create custom solar systems
- 🚀 Impressive graphics
- 🚀 Frequent updates

**What reviewers complain about**

- 🐛 Crashes and glitches
- 🔋 High battery consumption
- 💰 Excessive ads
- 🐛 Saving and loading issues
- 🐛 Unstable orbits

**Reported bugs**

- Planets/moons disappearing after saving and loading
- Bright flashes and screen distortions
- Planets/objects getting stuck inside stars
- Crashes when colliding or editing certain objects
- Inconsistent orbital mechanics and moons ejecting from planets

**Requested features**

- Add more galaxy and nebula textures
- Implement realistic supernova effects
- Allow customization of planet atmospheres and terrain
- Add binary star systems and rogue planets
- Introduce a galaxy maker and collision feature


### Water Box

[App page](https://appshunter.io/ios/app/water-box-physics-sandbox/id6741103044)

Explore realistic fluid dynamics and ragdoll physics in this sandbox playground. Sink ships, experiment with various liquids, and unleash destruction with a wide array of tools and elements. Build and test your creations in a detailed simulation environment.

**Highlights:** Realistic water and powder simulation, Ragdoll people playground experiments, Ship sinking and floating simulator, Gore and destruction simulator, Alchemy, fire, and chemical reactions, Build and share creations

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Increase max water by 10000 | $2.99 | one-time |
| 250 Coins | $4.99 | one-time |
| Creative Package 50% Discount | $4.99 | one-time |
| Increase max water by 20000 | $4.99 | one-time |
| 550 Coins | $7.99 | one-time |
| Creative Package | $9.99 | one-time |
| Increase max water by 50000 | $9.99 | one-time |
| 1200 Coins | $14.99 | one-time |
| Increase max water by 100000 | $17.99 | one-time |
| 2300 Coins | $24.99 | one-time |

**What reviewers like**

- 👍 Good game
- 👍 Awesome game
- 👍 Fun and good game
- 👍 Great game
- 👍 Satisfying and fun

**What reviewers complain about**

- 🐛 Crashes frequently
- 💡 Increase water capacity

**Reported bugs**

- Crashes frequently

**Requested features**

- Make ships sink like in Floating Sandbox


## Frequently asked questions

### Is Solar System Sim free?

Solar System Sim is free to download, with in-app purchases available.

### Is Water Box free?

Water Box is free to download, with in-app purchases available.

### Which has better reviews, Solar System Sim or Water Box?

Water Box is rated higher. Solar System Sim averages 4.5 out of 5 from 4.3K ratings, while Water Box averages 4.8 from 1.8K ratings.

### Do Solar System Sim or Water Box have ads?

Both Solar System Sim and Water Box show ads.

### Which is updated more often, Solar System Sim or Water Box?

Solar System Sim ships an update every 5 days, and Water Box every 9 days. Most recently, Solar System Sim was updated on October 25, 2026 and Water Box on October 25, 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.*