# SmartPIV vs Atomizer AR

The clearest difference is rating: SmartPIV at 5.0 against Atomizer AR's 4.0. SmartPIV also leads on in-app purchases (none vs 4) and iOS requirement (13.0 vs 15.2). Atomizer AR's advantage is update cadence (every 2 weeks vs every 7 months) and device support (6 vs 2). On price, ratings volume and ads there is nothing between them.

Both are free to download. Atomizer AR sells 4 in-app purchases, starting at $1.99 per month. SmartPIV asks for nothing beyond the download.

SmartPIV holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

SmartPIV ships an update every 7 months, Atomizer AR every 2 weeks. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SmartPIV | Atomizer AR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/smartpiv/id1471308387/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 137 MB |
| Requires iOS | **13.0** | 15.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Maeder](https://appshunter.io/developer/1122594621) | [Wonmo Seong](https://appshunter.io/developer/1625011193) |

## 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


### Atomizer AR

[App page](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706)

Explore the quantum world with interactive 3D models of atoms and molecules in augmented reality. Visualize atomic and molecular orbitals, and sketch organic compounds to instantly generate their nomenclature.

**Highlights:** 3D atomic and molecular orbital visualization, Augmented reality integration, Hartree-Fock computational method for MOs, Sketch organic compounds, Automatic SMILES and IUPAC nomenclature generation

**Features:** Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Californium Pass | $1.99 | per month |
| Californium Pass | $2.99 | per month |
| Einsteinium Pass | $3.99 | per year |
| Einsteinium Pass | $6.99 | per month |


## Frequently asked questions

### Is SmartPIV free?

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

### Is Atomizer AR free?

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

### Which has better reviews, SmartPIV or Atomizer AR?

SmartPIV is rated higher. SmartPIV averages 5.0 out of 5 from 2 ratings, while Atomizer AR averages 4.0 from 3 ratings.

### Do SmartPIV or Atomizer AR have ads?

Neither SmartPIV nor Atomizer AR shows ads.

### Which is updated more often, SmartPIV or Atomizer AR?

SmartPIV ships an update every 7 months, and Atomizer AR every 2 weeks. Most recently, SmartPIV was updated on October 17, 2026 and Atomizer AR on October 24, 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.*