# Imprint illusions vs Fluids & Particle Simulation

The clearest difference is review sentiment: Fluids & Particle Simulation at 90% against Imprint illusions's 26%. Fluids & Particle Simulation also leads on rating (4.7 vs 4.3) and update cadence (monthly vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Imprint illusions sells 1 one-off in-app purchase and Fluids & Particle Simulation sells 8 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Fluids & Particle Simulation holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Fluids & Particle Simulation has 777 ratings behind it against 92, so its average is the more settled of the two. Written reviews point the same way: 26% of Imprint illusions's written reviews are positive against 90% of Fluids & Particle Simulation's.

Imprint illusions ships an update every 2 months, Fluids & Particle Simulation monthly. The most recent releases landed on October 22, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Imprint illusions | Fluids & Particle Simulation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (92 ratings)](https://appshunter.io/ios/app/imprint-illusions/id285375876/reviews) | **[4.7 (777 ratings)](https://appshunter.io/ios/app/fluids-and-particle-simulation/id1532653221/reviews)** |
| Number of ratings | 92 | **777** |
| Positive reviews | 25.7% of reviews | **89.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 189 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Redwheel Apps](https://appshunter.io/developer/285375879) | [ZipoApps](https://appshunter.io/developer/1671444635) |

## What reviewers say

### Imprint illusions

[App page](https://appshunter.io/ios/app/imprint-illusions/id285375876)

Explore a vast collection of optical illusions, including impossible designs, high-speed photography, and captivating sidewalk art. This app offers hundreds of exciting visuals to entertain and amaze.

**Highlights:** Hundreds of optical illusions, High-speed photography, Sidewalk illusion art, Impossible designs, Exciting visuals

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NO ADS | $1.99 | one-time |

**What reviewers like**

- 😄 Fun and entertaining optical illusions
- 👍 Good for showing friends
- 🎨 Interesting visual content
- 💰 Free or low-cost app
- ⭐ Some quality updates appreciated

**What reviewers complain about**

- 😞 Very limited content (only 4-5 illusions)
- ⏱️ Gets boring within minutes
- 🖼️ Poor image quality and resolution
- 🔤 Cluttered interface and bad layout
- 📱 Multiple illusions crammed per page

**Reported bugs**

- App crashes and won't open
- Images appear distorted or fuzzy
- Some illusions don't work properly
- Inconsistent display of content
- Phone stability issues after installation

**Requested features**

- Add significantly more optical illusions
- Implement full-screen image viewing
- Provide explanations for each illusion
- Improve user interface and layout
- Add zoom functionality for images


### 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


## Frequently asked questions

### Is Imprint illusions free?

Imprint illusions is free to download, with in-app purchases available.

### Is Fluids & Particle Simulation free?

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

### Which has better reviews, Imprint illusions or Fluids & Particle Simulation?

Fluids & Particle Simulation is rated higher. Imprint illusions averages 4.3 out of 5 from 92 ratings, while Fluids & Particle Simulation averages 4.7 from 777 ratings.

### Do Imprint illusions or Fluids & Particle Simulation have ads?

Neither Imprint illusions nor Fluids & Particle Simulation shows ads.

### Which is updated more often, Imprint illusions or Fluids & Particle Simulation?

Imprint illusions ships an update every 2 months, and Fluids & Particle Simulation monthly. Most recently, Imprint illusions was updated on October 22, 2026 and Fluids & Particle Simulation on October 23, 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.*