# Ear Disorders vs U.S. Army STARS Elements

The clearest difference is price: U.S. Army STARS Elements at Free against Ear Disorders's $4.99. U.S. Army STARS Elements also leads on update cadence (every 8 months vs every 23 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

U.S. Army STARS Elements is free to download; Ear Disorders costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ear Disorders ships an update every 23 months, U.S. Army STARS Elements every 8 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ear Disorders | U.S. Army STARS Elements |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[4.6 (18 ratings)](https://appshunter.io/ios/app/us-army-stars-elements/id1103901837/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 8 months** |
| Monetization | — | Free |
| Size | 31 MB | 213 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Blue Tree Publishing, Inc.](https://appshunter.io/developer/496143325) | [Army Game Studio](https://appshunter.io/developer/540858534) |

## What reviewers say

### Ear Disorders

[App page](https://appshunter.io/ios/app/ear-disorders-inner/id1096311600)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Ear Disorders free?

Ear Disorders costs $4.99, with no in-app purchases.

### Is U.S. Army STARS Elements free?

U.S. Army STARS Elements is free to download, with no in-app purchases.

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

Neither Ear Disorders nor U.S. Army STARS Elements shows ads.

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

Ear Disorders ships an update every 23 months, and U.S. Army STARS Elements every 8 months. Most recently, Ear Disorders was updated on October 23, 2026 and U.S. Army STARS Elements 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.*