# Fluid Simulation vs GerakSob

The clearest difference is in-app purchases: GerakSob at none against Fluid Simulation's 3. GerakSob also leads on ads (none vs shown). Fluid Simulation's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and update cadence there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Fluid Simulation | GerakSob |
| --- | --- | --- |
| 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 | Every 2 days |
| Monetization | Free with in-app purchases | — |
| Size | 70 MB | 21 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Pavel Dobryakov](https://appshunter.io/developer/1443124992) | [uung bhuwono](https://appshunter.io/developer/6810873950) |

## What reviewers say

### 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 offers a relaxing escape for users of all ages, promoting a sense of peace and well-being.

**Highlights:** Mesmerizing fluid dynamics simulation, Stress and anxiety relief, Intuitive touch controls, Beautiful, high-quality visuals, Customizable settings, 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


### GerakSob

[App page](https://appshunter.io/ios/app/geraksob/id6810873948)

**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 GerakSob free?

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

### Do Fluid Simulation or GerakSob have ads?

Fluid Simulation shows ads; GerakSob does not.

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

Fluid Simulation ships an update every 2 days, and GerakSob every 2 days. Most recently, Fluid Simulation was updated on November 5, 2026 and GerakSob on October 31, 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.*