# Fluids & Particle Simulation vs Internal Waves

The clearest difference is review sentiment: Fluids & Particle Simulation at 90% against Internal Waves's 0%. Fluids & Particle Simulation also leads on ads (none vs shown). Internal Waves's advantage is update cadence (every 10 days 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 Internal Waves sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Fluids & Particle Simulation ships an update monthly, Internal Waves every 10 days. The most recent releases landed on August 16, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Fluids & Particle Simulation | Internal Waves |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (770 ratings)](https://appshunter.io/ios/app/fluids-and-particle-simulation/id1532653221/reviews)** | — |
| Number of ratings | **770** | — |
| Positive reviews | **89.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 189 MB | 133 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZipoApps](https://appshunter.io/developer/1671444635) | [Riley McKinnon](https://appshunter.io/developer/1824077312) |

## 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


### Internal Waves

[App page](https://appshunter.io/ios/app/internal-waves-particle-flow/id6748045391)

Create interactive particle art that responds to touch and music. This mindfulness experience offers a calming way to express yourself with light and motion, perfect for relaxation or creative exploration. Features AR mode for painting in your real-world space.

**Highlights:** Interactive particle art creation, Music-reactive visuals, Augmented Reality (AR) mode, Multi-touch drawing, Customizable particle effects, Mindfulness and relaxation focus

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Particle Flow Premium–Monthly | $2.99 | per month |
| Particle Flow Premium – Yearly | $9.99 | per year |


## Frequently asked questions

### Is Fluids & Particle Simulation free?

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

### Is Internal Waves free?

Internal Waves is free to download, with in-app purchases available.

### Do Fluids & Particle Simulation or Internal Waves have ads?

Internal Waves shows ads; Fluids & Particle Simulation does not.

### Which is updated more often, Fluids & Particle Simulation or Internal Waves?

Fluids & Particle Simulation ships an update monthly, and Internal Waves every 10 days. Most recently, Fluids & Particle Simulation was updated on August 16, 2026 and Internal Waves on June 11, 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.*