# U.S. Army STARS Elements vs Atomizer AR

The clearest difference is rating: U.S. Army STARS Elements at 4.6 against Atomizer AR's 4.0. U.S. Army STARS Elements also leads on in-app purchases (none vs 4) and ratings volume (18 vs 3). Atomizer AR's advantage is update cadence (every 2 weeks vs every 8 months) and device support (6 vs 3). On price, review sentiment 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. U.S. Army STARS Elements asks for nothing beyond the download.

U.S. Army STARS Elements holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: U.S. Army STARS Elements has 18 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

U.S. Army STARS Elements ships an update every 8 months, Atomizer AR every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | U.S. Army STARS Elements | Atomizer AR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (18 ratings)](https://appshunter.io/ios/app/us-army-stars-elements/id1103901837/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706/reviews) |
| Number of ratings | **18** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 213 MB | 137 MB |
| Requires iOS | **11.0** | 15.2 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch, Vision Pro** |
| Age rating | 9+ | 4+ |
| Developer | [Army Game Studio](https://appshunter.io/developer/540858534) | [Wonmo Seong](https://appshunter.io/developer/1625011193) |

## What reviewers say

### U.S. Army STARS Elements

[App page](https://appshunter.io/ios/app/us-army-stars-elements/id1103901837)

Explore the world of chemistry with interactive tools to build atoms, learn chemical bonds, and discover elements. Test your knowledge with engaging challenges designed for students, teachers, and enthusiasts.

**Highlights:** Atom Builder, SmashBond game, Interactive Periodic Table, STARS Challenge quiz, 3D atom construction, Bohr's model visualization

**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 U.S. Army STARS Elements free?

U.S. Army STARS Elements 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, U.S. Army STARS Elements or Atomizer AR?

U.S. Army STARS Elements is rated higher. U.S. Army STARS Elements averages 4.6 out of 5 from 18 ratings, while Atomizer AR averages 4.0 from 3 ratings.

### Do U.S. Army STARS Elements or Atomizer AR have ads?

Neither U.S. Army STARS Elements nor Atomizer AR shows ads.

### Which is updated more often, U.S. Army STARS Elements or Atomizer AR?

U.S. Army STARS Elements ships an update every 8 months, and Atomizer AR every 2 weeks. Most recently, U.S. Army STARS Elements was updated on October 24, 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.*