# U.S. Army STARS Elements vs Elemental Rx

The clearest difference is update cadence: Elemental Rx at every 3 days against U.S. Army STARS Elements's every 8 months. Elemental Rx also leads on rating (5.0 vs 4.6). U.S. Army STARS Elements's advantage is ratings volume (19 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Elemental Rx holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: U.S. Army STARS Elements has 19 ratings behind it against 2, so its average is the more settled of the two.

U.S. Army STARS Elements ships an update every 8 months, Elemental Rx every 3 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | U.S. Army STARS Elements | Elemental Rx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (19 ratings)](https://appshunter.io/ios/app/us-army-stars-elements/id1103901837/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/elemental-rx-periodic-table/id6450026459/reviews)** |
| Number of ratings | **19** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 days** |
| Monetization | Free | Free |
| Size | 213 MB | 74 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 9+ | 4+ |
| Developer | [Army Game Studio](https://appshunter.io/developer/540858534) | [Proteverse LLC](https://appshunter.io/developer/287381015) |

## 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


### Elemental Rx

[App page](https://appshunter.io/ios/app/elemental-rx-periodic-table/id6450026459)

Explore the periodic table with detailed information on element properties, atomic structure, and history. Visualize electron shells, atomic crystal structures, and emission spectra. Personalize your learning with color-coded elements.

**Highlights:** Interactive Periodic Table, Detailed Element Information, Color-Coded Elements, Electron Shell Visualization, Atomic Emission Spectra, Atomic Crystal Structure Visualization, Anecdotes and History

**In-app purchases:** none


## 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 Elemental Rx free?

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

### Which has better reviews, U.S. Army STARS Elements or Elemental Rx?

Elemental Rx is rated higher. U.S. Army STARS Elements averages 4.6 out of 5 from 19 ratings, while Elemental Rx averages 5.0 from 2 ratings.

### Do U.S. Army STARS Elements or Elemental Rx have ads?

Neither U.S. Army STARS Elements nor Elemental Rx shows ads.

### Which is updated more often, U.S. Army STARS Elements or Elemental Rx?

U.S. Army STARS Elements ships an update every 8 months, and Elemental Rx every 3 days. Most recently, U.S. Army STARS Elements was updated on November 2, 2026 and Elemental Rx on November 3, 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.*