# Fluids & Particle Simulation vs Paint book

The clearest difference is ads: Fluids & Particle Simulation at none against Paint book's shown. Fluids & Particle Simulation also leads on rating (4.7 vs 4.3) and review sentiment (90% vs 67%). Paint book's advantage is update cadence (fortnightly vs monthly). On price, in-app purchases, monetization model 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 and Paint book sells 2 in-app purchases, starting at $2.99 per 3 months. 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. Both are backed by a comparable volume of ratings — 776 and 178 respectively. Written reviews point the same way: 90% of Fluids & Particle Simulation's written reviews are positive against 67% of Paint book's.

Fluids & Particle Simulation ships an update monthly, Paint book fortnightly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Fluids & Particle Simulation | Paint book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (776 ratings)](https://appshunter.io/ios/app/fluids-and-particle-simulation/id1532653221/reviews)** | [4.3 (178 ratings)](https://appshunter.io/ios/app/paint-book-drawing-apps/id1630711420/reviews) |
| Number of ratings | **776** | 178 |
| Positive reviews | **89.6% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 189 MB | 33 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZipoApps](https://appshunter.io/developer/1671444635) | [随香 林](https://appshunter.io/developer/1618597588) |

## 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


### Paint book

[App page](https://appshunter.io/ios/app/paint-book-drawing-apps/id1630711420)

Unleash your creativity with this drawing app designed for beginners and enthusiasts alike. It offers a user-friendly interface with essential tools like brushes, layers, and an eraser. Explore a variety of avatars and sketches for inspiration while you draw.

**Highlights:** Artboard and multiple brushes, Layer support, Eraser modification, Color adjustment, Avatar and sketch resources, Free creative graffiti

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vip three months | $2.99 | per 3 months |
| Pro Version | $2.99 | one-time |


## Frequently asked questions

### Is Fluids & Particle Simulation free?

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

### Is Paint book free?

Paint book is free to download, with in-app purchases available.

### Which has better reviews, Fluids & Particle Simulation or Paint book?

Fluids & Particle Simulation is rated higher. Fluids & Particle Simulation averages 4.7 out of 5 from 776 ratings, while Paint book averages 4.3 from 178 ratings.

### Do Fluids & Particle Simulation or Paint book have ads?

Paint book shows ads; Fluids & Particle Simulation does not.

### Which is updated more often, Fluids & Particle Simulation or Paint book?

Fluids & Particle Simulation ships an update monthly, and Paint book fortnightly. Most recently, Fluids & Particle Simulation was updated on November 3, 2026 and Paint book on November 3, 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.*