# Structure Viewer vs Atomizer AR

The clearest difference is in-app purchases: Structure Viewer at none against Atomizer AR's 4. Structure Viewer also leads on iOS requirement (11.0 vs 15.2). Atomizer AR's advantage is device support (6 vs 3). On price and ads there is nothing between them.

Both are free to download. Atomizer AR sells 4 in-app purchases, starting at $4.99 per month. Structure Viewer asks for nothing beyond the download.

## The numbers

| Metric | Structure Viewer | Atomizer AR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (3 ratings)](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Monetization | **Free** | Freemium |
| Size | 45 MB | 137 MB |
| Requires iOS | **11.0** | 15.2 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Shafferman](https://appshunter.io/developer/1605647086) | [Wonmo Seong](https://appshunter.io/developer/1625011193) |

## What reviewers say

### Structure Viewer

[App page](https://appshunter.io/ios/app/structure-viewer/id1605647084)

Visualize molecular structures in 2D by entering their common names. This educational tool displays chemical structures with all hydrogen atoms clearly rendered.

**Highlights:** Enter common molecular names, Render structures in 2D, Display all hydrogens, Educational tool

**Features:** macOS Compatibility

**In-app purchases:** none


### Atomizer AR

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

Visualize atomic and molecular orbitals in 3D, render electron density clouds, and explore molecules in augmented reality. Calculate molar mass, balance equations, and sketch molecules in 2D.

**Highlights:** 3D atomic and molecular orbital visualization, Electron density cloud rendering, WebXR augmented reality exploration, Molecule control via gyroscope, Molar mass calculation, Equation balancing and stoichiometry, 2D molecule sketching

**Features:** Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Californium Pass | $4.99 | per month |
| Einsteinium Pass | $12.99 | per month |
| Californium Yearly | $39.99 | per year |
| Einsteinium Yearly | $99.00 | per year |


## Frequently asked questions

### Is Structure Viewer free?

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

### Is Atomizer AR free?

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

### Do Structure Viewer or Atomizer AR have ads?

Neither Structure Viewer nor Atomizer AR shows ads.

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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.*