# Particle Simulation Visualizer vs srad

The clearest difference is in-app purchases: srad at none against Particle Simulation Visualizer's 2. srad also leads on update cadence (every 3 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Particle Simulation Visualizer sells 2 in-app purchases, starting at $3.99 per 7 days. srad asks for nothing beyond the download.

Particle Simulation Visualizer ships an update monthly, srad every 3 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Particle Simulation Visualizer | srad |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Size | 128 MB | 9 MB |
| Requires iOS | **18.0** | 18.5 |
| Devices | **iPhone, iPad, Mac** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Marvin Krueger](https://appshunter.io/developer/1152894281) | [Williams Martinez](https://appshunter.io/developer/674151863) |

## What reviewers say

### Particle Simulation Visualizer

[App page](https://appshunter.io/ios/app/particle-simulation-visualizer/id6765869491)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Particles PRO | $3.99 | per 7 days |
| Particles PRO | $24.99 | per year |


### srad

[App page](https://appshunter.io/ios/app/srad/id6776773563)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Particle Simulation Visualizer free?

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

### Is srad free?

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

### Do Particle Simulation Visualizer or srad have ads?

Neither Particle Simulation Visualizer nor srad shows ads.

### Which is updated more often, Particle Simulation Visualizer or srad?

Particle Simulation Visualizer ships an update monthly, and srad every 3 days. Most recently, Particle Simulation Visualizer was updated on November 5, 2026 and srad on November 10, 2026.

---

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