# Polyrhythm vs Particle Simulation

The clearest difference is rating: Particle Simulation at 4.5 against Polyrhythm's 2.4. Particle Simulation also leads on ratings volume (46 vs 7). Polyrhythm's advantage is update cadence (every 5 weeks vs every 7 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Polyrhythm sells 3 in-app purchases, starting at $1.99 per 7 days and Particle Simulation sells 4 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Particle Simulation holds the better App Store score, 4.5 against 2.4. That said, the two scores are not equally well evidenced: Particle Simulation has 46 ratings behind it against 7, so its average is the more settled of the two. Written reviews split almost evenly too, at 25% and 25% positive.

Polyrhythm ships an update every 5 weeks, Particle Simulation every 7 months. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Polyrhythm | Particle Simulation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (7 ratings)](https://appshunter.io/ios/app/polyrhythm-relaxing-sounds/id6462398544/reviews) | **[4.5 (46 ratings)](https://appshunter.io/ios/app/particle-simulation-flow-sim/id6467405758/reviews)** |
| Number of ratings | 7 | **46** |
| Positive reviews | 25.0% of reviews | 25.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 7 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 131 MB | 132 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stanislav Duplinskiy](https://appshunter.io/developer/1529735040) | [Marvin Krueger](https://appshunter.io/developer/1152894281) |

## What reviewers say

### Polyrhythm

[App page](https://appshunter.io/ios/app/polyrhythm-relaxing-sounds/id6462398544)

Create a personalized soundscape for relaxation, sleep, or meditation. Explore a variety of organic and synthesized instruments, ambient background sounds, and AI-generated presets. Customize and save your favorite sound combinations for a tranquil experience.

**Highlights:** Variety of sound presets, Organic and synthesized instruments, Background ambient sounds, AI preset generator, Advanced preset customization, Create and save custom presets

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access to app functions | $1.99 | per 7 days |
| Full access to app functions | $5.99 | per month |
| Full access to app functions | $12.99 | per 3 months |


### 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 | $2.99 | per 7 days |
| Psychedelic magic \| monthly | $3.99 | per month |
| Particles PRO | $12.99 | per year |
| Psychedelic magic | $19.99 | one-time |


## Frequently asked questions

### Is Polyrhythm free?

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

### Is Particle Simulation free?

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

### Which has better reviews, Polyrhythm or Particle Simulation?

Particle Simulation is rated higher. Polyrhythm averages 2.4 out of 5 from 7 ratings, while Particle Simulation averages 4.5 from 46 ratings.

### Do Polyrhythm or Particle Simulation have ads?

Neither Polyrhythm nor Particle Simulation shows ads.

### Which is updated more often, Polyrhythm or Particle Simulation?

Polyrhythm ships an update every 5 weeks, and Particle Simulation every 7 months. Most recently, Polyrhythm was updated on September 11, 2026 and Particle Simulation on September 9, 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.*