# Fluids & Particle Simulation vs subflow

The clearest difference is in-app purchases: subflow at none against Fluids & Particle Simulation's 8. subflow also leads on update cadence (every 6 days vs monthly). Fluids & Particle Simulation's advantage is rating (4.7 vs 4.3) and review sentiment (90% vs 67%). 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. subflow asks for nothing beyond the download.

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 770 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 90% of Fluids & Particle Simulation's written reviews are positive against 67% of subflow's.

Fluids & Particle Simulation ships an update monthly, subflow every 6 days. The most recent releases landed on August 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Fluids & Particle Simulation | subflow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (770 ratings)](https://appshunter.io/ios/app/fluids-and-particle-simulation/id1532653221/reviews)** | [4.3 (17 ratings)](https://appshunter.io/ios/app/subflow/id1570176211/reviews) |
| Number of ratings | **770** | 17 |
| Positive reviews | **89.6% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 189 MB | 3 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [ZipoApps](https://appshunter.io/developer/1671444635) | [Ello Skelling Productions](https://appshunter.io/developer/1569508906) |

## 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


### subflow

[App page](https://appshunter.io/ios/app/subflow/id1570176211)

Create dynamic music visualizations for any setting. Control modes, speed, and beat patterns with intuitive screen gestures. Advanced users can leverage UDP and OS2L for complex control with DJ software.

**Highlights:** Gesture-based control for modes, speed, and beats, Beat pattern customization, UDP command sequencing, OS2L integration with DJ software, Color customization via long press

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

**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 subflow free?

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

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

Fluids & Particle Simulation is rated higher. Fluids & Particle Simulation averages 4.7 out of 5 from 770 ratings, while subflow averages 4.3 from 17 ratings.

### Do Fluids & Particle Simulation or subflow have ads?

Neither Fluids & Particle Simulation nor subflow shows ads.

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

Fluids & Particle Simulation ships an update monthly, and subflow every 6 days. Most recently, Fluids & Particle Simulation was updated on August 16, 2026 and subflow on September 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*