# Fluids & Particle Simulation vs Zysu.io

The clearest difference is in-app purchases: Zysu.io at none against Fluids & Particle Simulation's 8. Fluids & Particle Simulation's advantage is update cadence (monthly vs every 19 months) and iOS requirement (13.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Fluids & Particle Simulation sells 8 in-app purchases, starting at $2.99 per 7 days. Zysu.io asks for nothing beyond the download.

Fluids & Particle Simulation ships an update monthly, Zysu.io every 19 months. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Fluids & Particle Simulation | Zysu.io |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (777 ratings)](https://appshunter.io/ios/app/fluids-and-particle-simulation/id1532653221/reviews)** | — |
| Number of ratings | **777** | — |
| Positive reviews | 89.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 19 months |
| Monetization | Free with in-app purchases | — |
| Size | 189 MB | 30 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [ZipoApps](https://appshunter.io/developer/1671444635) | [Zachary Job](https://appshunter.io/developer/1769344171) |

## What reviewers say

### Fluids & Particle Simulation

[App page](https://appshunter.io/ios/app/fluids-and-particle-simulation/id1532653221)

Create mesmerizing, psychedelic fluid art with your fingertips. This app offers a calming and creative outlet to reduce stress and channel negative emotions into beautiful, flowing patterns. Enjoy a unique ASMR experience with sound-reactive visuals and customizable parameters.

**Highlights:** Interactive fluid art simulation, Sound-reactive fluids, Dozens of customizable parameters, Autopilot mode, Gyrosensor and haptic feedback integration, Real-time sound synthesis, Video recording and screenshot functionality

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $2.99 | per 7 days |
| Unlock all \| monthly premium | $5.99 | per month |
| Fluids PRO | $17.99 | per year |
| Unlock all Presets (iOS) | $1.99 | one-time |
| Unlock all Presets (OS X Mac) | $2.99 | one-time |
| Unlock all features | $14.99 | one-time |
| Psychedelic magic (OS X Mac) | $24.99 | one-time |
| Psychedelic magic (iOS) | $44.99 | one-time |

**What reviewers like**

- 🚀 Mesmerizing visuals
- 👍 Relaxing and calming experience
- 🎨 Customizable color and fluid effects
- 🎶 Enjoyable audio/music integration
- 💡 Innovative and creative app concept

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔋 Device overheating issues
- 💰 Paid features may be too expensive
- 🔇 Lack of volume/audio control options

**Reported bugs**

- Microphone input not working as expected
- Difficulty resetting or restoring default settings

**Requested features**

- Ability to sync visuals with external audio/music
- More preset options and visual effects
- Improved UI/UX for settings and controls
- Support for casting to external displays


### Zysu.io

[App page](https://appshunter.io/ios/app/zysuio/id6698865697)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fluids & Particle Simulation free?

Fluids & Particle Simulation is free to download, with in-app purchases available.

### Is Zysu.io free?

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

### Do Fluids & Particle Simulation or Zysu.io have ads?

Neither Fluids & Particle Simulation nor Zysu.io shows ads.

### Which is updated more often, Fluids & Particle Simulation or Zysu.io?

Fluids & Particle Simulation ships an update monthly, and Zysu.io every 19 months. Most recently, Fluids & Particle Simulation was updated on November 7, 2026 and Zysu.io on November 4, 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.*