# Fluid Simulation vs Main Character

The clearest difference is in-app purchases: Main Character at none against Fluid Simulation's 3. Main Character also leads on ads (none vs shown). Fluid Simulation's advantage is iOS requirement (15.0 vs 17.6). On price and device support there is nothing between them.

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

## The numbers

| Metric | Fluid Simulation | Main Character |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (90K ratings)](https://appshunter.io/ios/app/fluid-simulation-antistress/id1443124993/reviews)** | — |
| Number of ratings | **90K** | — |
| Positive reviews | 96.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 70 MB | 238 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Dobryakov](https://appshunter.io/developer/1443124992) | [VINEAL VIJI VARGHESE](https://appshunter.io/developer/1884417960) |

## What reviewers say

### Fluid Simulation

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

Experience a calming and mesmerizing visual journey that helps relieve anxiety and stress. Interact with swirling fluids and vibrant colors to create a sense of peace and well-being.

**Highlights:** Mesmerizing fluid dynamics simulation, Stress and anxiety relief, Intuitive touch controls, Customizable settings and presets, High-quality visuals and animations, Satisfying and engaging experience

**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


### Main Character

[App page](https://appshunter.io/ios/app/main-character/id6760429383)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fluid Simulation free?

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

### Is Main Character free?

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

### Do Fluid Simulation or Main Character have ads?

Fluid Simulation shows ads; Main Character does not.

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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.*