# Gravitarium vs Fluid Simulation

The clearest difference is in-app purchases: Gravitarium at none against Fluid Simulation's 3. Gravitarium also leads on ads (none vs shown) and device support (5 vs 3). Fluid Simulation's advantage is update cadence (every 2 days vs every 3 months) and rating (4.9 vs 4.5). On price there is nothing between them.

Both are free to download. Fluid Simulation sells 3 one-off in-app purchases. Gravitarium asks for nothing beyond the download.

Fluid Simulation holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Fluid Simulation has 90K ratings behind it against 331, so its average is the more settled of the two. Written reviews point the same way: 82% of Gravitarium's written reviews are positive against 96% of Fluid Simulation's.

Gravitarium ships an update every 3 months, Fluid Simulation every 2 days. The most recent releases landed on November 1, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Gravitarium | Fluid Simulation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (331 ratings)](https://appshunter.io/ios/app/gravitarium/id741646894/reviews) | **[4.9 (90K ratings)](https://appshunter.io/ios/app/fluid-simulation-antistress/id1443124993/reviews)** |
| Number of ratings | 331 | **90K** |
| Positive reviews | 81.8% of reviews | **96.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 46 MB | 71 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple TV, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Scep Group LLC](https://appshunter.io/developer/1612838932) | [Pavel Dobryakov](https://appshunter.io/developer/1443124992) |

## What reviewers say

### Gravitarium

[App page](https://appshunter.io/ios/app/gravitarium/id741646894)

Explore a world of dynamic particle animations controlled by your touch. Create stunning visual effects with up to 10 interactive formations and customize colors, animations, and sounds. Save, share, and even use your creations as parallax-optimized wallpapers.

**Highlights:** Multitouch particle control, 10 interactive formations, Customizable animations and colors, Save, edit, and share creations, Parallax wallpaper optimization, Voice and music reaction, Multiplayer drawing/flow

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 😌 Highly relaxing and calming experience
- 🧠 Excellent for ADHD, autism, and sensory processing
- 🎵 Soothing music and audio design
- 💰 Free version available with no ads
- 🎨 Visually satisfying particle effects

**What reviewers complain about**

- 💳 Paywall blocks many features
- 🐛 Occasional lag and glitches
- 🎵 iTunes music integration doesn't work properly
- 📱 Display issues on newer devices (iPhone X, XS Max)
- 🎨 Interface design could be improved

**Reported bugs**

- App crashes when playing music
- iTunes music upload fails despite paid version
- Game Center login not working
- Black bars on iPhone XS Max display
- Option bar doesn't show/retract properly

**Requested features**

- Custom music upload functionality
- Automatic music integration
- Support for newer screen resolutions
- iPhone X/XS Max compatibility
- More free features without paywall


### Fluid Simulation

[App page](https://appshunter.io/ios/app/fluid-simulation-antistress/id1443124993)

Experience a calming and mesmerizing visual journey with this app. Interact with swirling fluids and vibrant colors to relieve stress and anxiety. It's designed to bring peace and a sense of connection to the universe.

**Highlights:** Interactive fluid simulation, Calming and mesmerizing visuals, Stress and anxiety relief, Customizable settings, High-quality graphics, Engaging and satisfying interaction

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fluid Simulation | $3.69 | one-time |
| Fluid Simulation | $23.00 | one-time |
| Fluid Simulation | $33.00 | one-time |

**What reviewers like**

- 🌈 Beautiful and mesmerizing visuals
- 🧘‍♀️ Calming and relaxing experience
- 👍 Intuitive and easy to use
- 🎨 Customizable settings and presets
- ⭐️ High-quality graphics and animations

**What reviewers complain about**

- 💰 Premium features locked behind paywall
- 🔒 Limited customization options in free version
- 🐛 Occasional crashes or performance issues
- 📱 Smaller screen size can make controls tricky

**Reported bugs**

- Subscription issues and inability to access premium features
- Crashes or freezes when changing certain settings

**Requested features**

- Ability to save and share custom presets
- Option to change background color
- Slower animation speed for more control
- Integration with music or audio playback
- Support for larger screens and TVs


## Frequently asked questions

### Is Gravitarium free?

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

### Is Fluid Simulation free?

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

### Which has better reviews, Gravitarium or Fluid Simulation?

Fluid Simulation is rated higher. Gravitarium averages 4.5 out of 5 from 331 ratings, while Fluid Simulation averages 4.9 from 90K ratings.

### Do Gravitarium or Fluid Simulation have ads?

Fluid Simulation shows ads; Gravitarium does not.

### Which is updated more often, Gravitarium or Fluid Simulation?

Gravitarium ships an update every 3 months, and Fluid Simulation every 2 days. Most recently, Gravitarium was updated on November 1, 2026 and Fluid Simulation on November 9, 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.*