# Water Box vs Kat Game

The clearest difference is in-app purchases: Kat Game at none against Water Box's 10. Kat Game also leads on ads (none vs shown). Water Box's advantage is update cadence (every 9 days vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Water Box sells 10 one-off in-app purchases. Kat Game asks for nothing beyond the download.

Water Box ships an update every 9 days, Kat Game monthly. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Water Box | Kat Game |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.8K ratings)](https://appshunter.io/ios/app/water-box-physics-sandbox/id6741103044/reviews)** | — |
| Number of ratings | **1.8K** | — |
| Positive reviews | 92.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 87 MB | 15 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Lukas Oertel](https://appshunter.io/developer/1562391231) | [Dale LaPlante](https://appshunter.io/developer/1437961207) |

## What reviewers say

### 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


### Kat Game

[App page](https://appshunter.io/ios/app/kat-game/id6749801159)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Water Box free?

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

### Is Kat Game free?

Kat Game is free to download, with no in-app purchases.

### Do Water Box or Kat Game have ads?

Water Box shows ads; Kat Game does not.

### Which is updated more often, Water Box or Kat Game?

Water Box ships an update every 9 days, and Kat Game monthly. Most recently, Water Box was updated on October 25, 2026 and Kat Game on October 6, 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.*