# Flasia HD vs Particle Simulation

Flasia HD and Particle Simulation both sit at 4.6 stars, but that hides the real split: 100% of Flasia HD's written reviews are positive against 25% of Particle Simulation's. Flasia HD also leads on in-app purchases (none vs 4). Particle Simulation's advantage is price (Free vs $3.99) and ratings volume (46 vs 11). On rating, update cadence, ads and device support there is nothing between them.

Particle Simulation is free to download; Flasia HD costs $3.99 up front. Particle Simulation sells 4 in-app purchases, starting at $3.99 per 7 days. Flasia HD asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Flasia HD against 4.5 for Particle Simulation. Both are backed by a comparable volume of ratings — 11 and 46 respectively. Written reviews are what separate them: 100% of Flasia HD's written reviews are positive against 25% of Particle Simulation's.

Flasia HD ships an update every 5 months, Particle Simulation every 7 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Flasia HD | Particle Simulation |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.6 (11 ratings)](https://appshunter.io/ios/app/flasia-hd/id976926654/reviews)** | [4.5 (46 ratings)](https://appshunter.io/ios/app/particle-simulation-flow-sim/id6467405758/reviews) |
| Number of ratings | 11 | **46** |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 59 MB | 132 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SungLab Inc](https://appshunter.io/developer/1691666995) | [Marvin Krueger](https://appshunter.io/developer/1152894281) |

## What reviewers say

### Flasia HD

[App page](https://appshunter.io/ios/app/flasia-hd/id976926654)

This interactive visualizer creates beautiful, artistic displays inspired by natural phenomena like fireworks and fluid dynamics. It offers creative thinking tools and can serve as entertainment or interior decor for art enthusiasts.

**Highlights:** 5-finger multi-touch display, Customizable particle length, number, and size, Two play modes: gesture control and multi-touch drawing, Fluid effect with high FPS, Music options by Aden Ray

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

**In-app purchases:** none


### Particle Simulation

[App page](https://appshunter.io/ios/app/particle-simulation-flow-sim/id6467405758)

Explore a world of creativity and find tranquility with mesmerizing particle simulations. Interact with dynamic particles, customize their behavior, and create beautiful art impressions while listening to meditative music. It's a calming and creative outlet for stress reduction and self-expression.

**Highlights:** Dynamic particle simulation, Meditative music, Customizable parameters, Autopilot mode, Gyrosensor and haptic feedback, Capture and share creations, Save and load presets

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Particles PRO | $3.99 | per 7 days |
| Psychedelic magic \| monthly | $3.99 | per month |
| Particles PRO | $17.99 | per year |
| Psychedelic magic | $19.99 | one-time |


## Frequently asked questions

### Is Flasia HD free?

Flasia HD costs $3.99, with no in-app purchases.

### Is Particle Simulation free?

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

### Which has better reviews, Flasia HD or Particle Simulation?

Flasia HD is rated higher. Flasia HD averages 4.6 out of 5 from 11 ratings, while Particle Simulation averages 4.5 from 46 ratings.

### Do Flasia HD or Particle Simulation have ads?

Neither Flasia HD nor Particle Simulation shows ads.

### Which is updated more often, Flasia HD or Particle Simulation?

Flasia HD ships an update every 5 months, and Particle Simulation every 7 months. Most recently, Flasia HD was updated on October 7, 2026 and Particle Simulation on October 8, 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.*