# Spaceflight Simulator vs Water Physics Simulation

The clearest difference is rating: Spaceflight Simulator at 4.8 against Water Physics Simulation's 4.2. Spaceflight Simulator also leads on ads (none vs shown) and update cadence (every 9 days vs every 2 months). Water Physics Simulation's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Spaceflight Simulator sells 10 one-off in-app purchases and Water Physics Simulation sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Spaceflight Simulator holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Spaceflight Simulator has 97K ratings behind it against 4.6K, so its average is the more settled of the two. Written reviews point the same way: 86% of Spaceflight Simulator's written reviews are positive against 76% of Water Physics Simulation's.

Spaceflight Simulator ships an update every 9 days, Water Physics Simulation every 2 months. Both last shipped on September 25, 2026.

## The numbers

| Metric | Spaceflight Simulator | Water Physics Simulation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (97K ratings)](https://appshunter.io/ios/app/spaceflight-simulator/id1308057272/reviews)** | [4.2 (4.6K ratings)](https://appshunter.io/ios/app/water-physics-simulation/id1562726050/reviews) |
| Number of ratings | **97K** | 4.6K |
| Positive reviews | **85.7% of reviews** | 75.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 172 MB | 60 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Spaceflight Simulator UK Ltd](https://appshunter.io/developer/1308057271) | [Lukas Oertel](https://appshunter.io/developer/1562391231) |

## What reviewers say

### Spaceflight Simulator

[App page](https://appshunter.io/ios/app/spaceflight-simulator/id1308057272)

Build and launch rockets to explore a realistic, open universe. Experience space exploration with accurate physics and a vast, explorable solar system.

**Highlights:** Build custom rockets, Realistic orbital mechanics, Explore a scaled universe, Visit planets and moons, Open-world space exploration, Real-life physics simulation

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skins Expansion | $2.99 | one-time |
| Full Version | $3.99 | one-time |
| Redstone + Atlas Pack | $3.99 | one-time |
| Parts Expansion | $4.99 | one-time |
| Infinite Area Expansion | $4.99 | one-time |
| Expansion Bundle | $7.99 | one-time |
| Cheats Expansion | $9.99 | one-time |
| Full Bundle Upgrade | $9.99 | one-time |
| Full Bundle | $11.99 | one-time |
| Full Bundle | $14.99 | one-time |

**What reviewers like**

- 🚀 Realistic physics and space simulation
- 👍 Intuitive controls and easy to learn
- 🚀 Ability to build complex rockets and spacecraft
- 👍 No ads or in-app purchases required to play

**What reviewers complain about**

- 🐛 Occasional bugs and glitches, especially with large rockets
- 🔋 Potential performance issues on older devices
- 🔒 Limited customization and part options in free version
- 🚀 Docking and rendezvous maneuvers can be very challenging

**Reported bugs**

- Rocket parts sometimes clipping through each other
- Occasional freezing or crashing when launching large rockets
- Issues with RCS thrusters firing unexpectedly during docking
- Problems with maintaining stable orbits and transfers

**Requested features**

- Add more planets, moons, and celestial bodies to explore
- Implement a career mode or progression system with challenges
- Allow for more customization of rocket parts and spacecraft
- Improve docking and rendezvous mechanics to make them more accessible
- Add the ability to control individual astronauts and perform EVAs


### 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 Spaceflight Simulator free?

Spaceflight Simulator 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, Spaceflight Simulator or Water Physics Simulation?

Spaceflight Simulator is rated higher. Spaceflight Simulator averages 4.8 out of 5 from 97K ratings, while Water Physics Simulation averages 4.2 from 4.6K ratings.

### Do Spaceflight Simulator or Water Physics Simulation have ads?

Water Physics Simulation shows ads; Spaceflight Simulator does not.

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

Spaceflight Simulator ships an update every 9 days, and Water Physics Simulation every 2 months. Most recently, Spaceflight Simulator 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.*