# Roblox vs Water Physics Simulation

The clearest difference is ads: Roblox at none against Water Physics Simulation's shown. Roblox also leads on update cadence (weekly vs every 2 months) and ratings volume (20M vs 4.6K). Water Physics Simulation's advantage is review sentiment (76% vs 60%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Roblox sells 16 in-app purchases, starting at $4.99 per month and Water Physics Simulation sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Roblox holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Roblox has 20M ratings behind it against 4.6K, so its average is the more settled of the two. Written reviews complicate that: 60% of Roblox's written reviews are positive against 76% of Water Physics Simulation's, so the app with the better star average is not the one people write more warmly about.

Roblox ships an update weekly, Water Physics Simulation every 2 months. Both last shipped on September 25, 2026.

## The numbers

| Metric | Roblox | Water Physics Simulation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (20M ratings)](https://appshunter.io/ios/app/roblox/id431946152/reviews)** | [4.2 (4.6K ratings)](https://appshunter.io/ios/app/water-physics-simulation/id1562726050/reviews) |
| Number of ratings | **20M** | 4.6K |
| Positive reviews | 60.0% of reviews | **75.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#1** | — |
| Size | 224 MB | 60 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 9+ |
| Developer | [Roblox Corporation](https://appshunter.io/developer/431946155) | [Lukas Oertel](https://appshunter.io/developer/1562391231) |

## What reviewers say

### Roblox

[App page](https://appshunter.io/ios/app/roblox/id431946152)

**Currently charting:** #1 Top Grossing · Action, #1 Top Grossing · Adventure, #2 Top Free · Adventure, #3 Top Free · Action, #5 Top Grossing · Games, #9 Top Free · Games, #24 Top Grossing, #76 Top Free (US App Store)

Explore millions of immersive 3D multiplayer experiences created by a global community. Play games, roleplay, compete, or create your own virtual worlds. Customize avatars and connect with friends across various devices.

**Highlights:** Discover millions of user-created experiences, Create and share your own games, Customize avatars with clothing and accessories, Play with friends across multiple devices, Multiplayer battles and role-playing games, In-app chat and voice communication (age-verified)

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Roblox Premium 450 | $4.99 | per month |
| 80 ROBUX | $0.99 | one-time |
| Premium 80 Robux | $0.99 | one-time |
| Premium 88 Subscribed | $0.99 | one-time |
| Premium 160 Robux | $1.99 | one-time |
| Premium 240 Robux | $2.99 | one-time |
| Premium 320 Robux | $3.99 | one-time |
| 400 Robux Premium | $4.99 | one-time |
| 440 Robux Subscribed | $4.99 | one-time |
| Roblox Premium 450 One Month | $4.99 | one-time |
| 800 ROBUX | $9.99 | one-time |
| 800 Robux Premium | $9.99 | one-time |
| 880 Robux Subscribed | $9.99 | one-time |
| Roblox Premium 1000 One Month | $9.99 | one-time |
| 1700 Robux Premium | $19.99 | one-time |
| Roblox Premium 2200 One Month | $19.99 | one-time |

**What reviewers like**

- 🚀 Endless games and experiences
- 🤝 Ability to make virtual friends
- 🎨 Customizable avatars
- 🎮 Wide variety of game genres
- 👍 Fun and engaging for all ages

**What reviewers complain about**

- 🤖 Ineffective moderation and reporting system
- 💰 Expensive in-game purchases
- 🔍 Difficulty finding specific games
- 🤔 Confusing chat/tag system
- 🔒 Concerns about online safety and predators

**Reported bugs**

- Frequent disconnections and server issues
- Glitches that delete purchased items
- Inconsistent chat filtering and tagging

**Requested features**

- Ability to earn Robux through gameplay
- Improved search and discovery for games
- More free avatar customization options
- Better parental controls and monitoring
- Faster response to reports of inappropriate content


### Water Physics Simulation

[App page](https://appshunter.io/ios/app/water-physics-simulation/id1562726050)

Explore three distinct physics simulations: build and navigate ships, experiment with bomb explosions and water behavior in a sandbox, or observe the interactions of various elements. This free app offers creative building and destructive fun.

**Highlights:** Water and liquid simulations, Ship building and raft survival, Bomb explosions and destruction sandbox, Real-time sandbox with powder/dust particles, Build and control custom boats, Create and destroy structures

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |
| Increase waterlimit by 10000 | $3.99 | one-time |
| Increase waterlimit by 20000 | $5.99 | one-time |
| Pro Package | $8.99 | one-time |
| Increase water by 50000 | $12.99 | one-time |

**What reviewers like**

- 👍 Amazing game
- 🚀 Great water physics
- 🚀 Realistic destruction
- 👍 Satisfying gameplay
- 👍 Relaxing experience

**What reviewers complain about**

- 🐛 Glitchy at times
- 💰 Paywall for premium features
- 🔍 Confusing UI/controls
- 📺 Too many ads

**Reported bugs**

- Ships not sinking properly
- Spawned objects floating upwards
- Connectivity issues causing crashes

**Requested features**

- Add more disaster tools (e.g., lava, fire, earthquakes)
- Increase water capacity for free users
- Implement realistic ship sinking mechanics
- Add more customization options (e.g., background, color schemes)
- Improve camera controls and zooming


## Frequently asked questions

### Is Roblox free?

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

### Is Water Physics Simulation free?

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

### Which has better reviews, Roblox or Water Physics Simulation?

Roblox is rated higher. Roblox averages 4.5 out of 5 from 20M ratings, while Water Physics Simulation averages 4.2 from 4.6K ratings.

### Do Roblox or Water Physics Simulation have ads?

Water Physics Simulation shows ads; Roblox does not.

### Which is updated more often, Roblox or Water Physics Simulation?

Roblox ships an update weekly, and Water Physics Simulation every 2 months. Most recently, Roblox was updated on September 25, 2026 and Water Physics Simulation on September 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.*