# SmartPIV vs Quantum

The clearest difference is in-app purchases: SmartPIV at none against Quantum's 6. SmartPIV also leads on iOS requirement (13.0 vs 26.0). Quantum's advantage is update cadence (every 5 weeks vs every 7 months) and ratings volume (152 vs 2). On price, rating, ads and device support there is nothing between them.

Both are free to download. Quantum sells 3 one-off in-app purchases. SmartPIV asks for nothing beyond the download.

SmartPIV holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Quantum has 152 ratings behind it against 2, so its average is the more settled of the two.

SmartPIV ships an update every 7 months, Quantum every 5 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | SmartPIV | Quantum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/smartpiv/id1471308387/reviews)** | [4.8 (152 ratings)](https://appshunter.io/ios/app/quantum-particle-life/id6504465371/reviews) |
| Number of ratings | 2 | **152** |
| Positive reviews | — | 81.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 32 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Maeder](https://appshunter.io/developer/1122594621) | [GEORGY OSTROBROD](https://appshunter.io/developer/1875865758) |

## What reviewers say

### SmartPIV

[App page](https://appshunter.io/ios/app/smartpiv/id1471308387)

This application allows users to determine flow velocity in a PIV setup, replacing traditional camera and analysis software. It visually displays current analysis results through velocity vectors for easy understanding of flow development. Designed to be simple, mobile, and convenient, it offers a low-cost and intuitive alternative for hands-on training.

**Highlights:** Determine flow velocity in PIV setups, Visualize flow with velocity vectors, Replaces traditional camera and analysis software, Low-cost and intuitive application, Mobile and convenient for hands-on training

**Features:** macOS Compatibility

**In-app purchases:** none


### Quantum

[App page](https://appshunter.io/ios/app/quantum-particle-life/id6504465371)

Explore the hidden world of particles with a real-time simulator. Model up to 10,000 particles and experiment with natural phenomena like crystallization and orbital mechanics. Customize interactions and visualize results dynamically.

**Highlights:** Real-time particle simulation, Model up to 10,000 particles, Simulate natural phenomena, Four distinct particle classes, Customizable rules editor, Dynamic visualizations, Interactive control

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Developer tip | $1.99 | one-time |
| Developer tip | $3.99 | one-time |
| Developer tip | $5.99 | one-time |


## Frequently asked questions

### Is SmartPIV free?

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

### Is Quantum free?

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

### Which has better reviews, SmartPIV or Quantum?

SmartPIV is rated higher. SmartPIV averages 5.0 out of 5 from 2 ratings, while Quantum averages 4.8 from 152 ratings.

### Do SmartPIV or Quantum have ads?

Neither SmartPIV nor Quantum shows ads.

### Which is updated more often, SmartPIV or Quantum?

SmartPIV ships an update every 7 months, and Quantum every 5 weeks. Most recently, SmartPIV was updated on November 3, 2026 and Quantum on November 4, 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.*