# U.S. Army STARS Elements vs iORA

The clearest difference is rating: iORA at 5.0 against U.S. Army STARS Elements's 4.7. iORA also leads on update cadence (every 2 months vs every 8 months). U.S. Army STARS Elements's advantage is iOS requirement (11.0 vs 14.3). On price, review sentiment, ratings volume and ads there is nothing between them.

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

iORA holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 18 and 12 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

U.S. Army STARS Elements ships an update every 8 months, iORA every 2 months. The most recent releases landed on August 25, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | U.S. Army STARS Elements | iORA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (18 ratings)](https://appshunter.io/ios/app/us-army-stars-elements/id1103901837/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/iora-reaction-visualizer/id1609524913/reviews)** |
| Number of ratings | **18** | 12 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 213 MB | 40 MB |
| Requires iOS | **11.0** | 14.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Army Game Studio](https://appshunter.io/developer/540858534) | [Daniel Ess](https://appshunter.io/developer/1609524915) |

## 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


### iORA

[App page](https://appshunter.io/ios/app/iora-reaction-visualizer/id1609524913)

Visualize chemical reactions in 3D using quantum-mechanical simulations. This free, interactive application makes complex chemistry concepts accessible and engaging for learners.

**Highlights:** 3D chemical reaction visualization, Quantum-mechanical simulations, Interactive learning, Easy to use interface, Educational tool

**Features:** macOS Compatibility

**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 iORA free?

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

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

iORA is rated higher. U.S. Army STARS Elements averages 4.7 out of 5 from 18 ratings, while iORA averages 5.0 from 12 ratings.

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

Neither U.S. Army STARS Elements nor iORA shows ads.

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

U.S. Army STARS Elements ships an update every 8 months, and iORA every 2 months. Most recently, U.S. Army STARS Elements was updated on August 25, 2026 and iORA on September 7, 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.*