Comparison

U.S. Army STARS Elements vs Elemental Rx

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

U.S. Army STARS Elements

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
Read full description

U.S. Army STARS Elements is a fun and exciting way to learn chemistry. Build your own atom, play a game to help you learn about chemical bonds, explore the periodic table, and test your chemistry knowledge. Elements is great for students, teachers, and anyone interested in chemistry. U.S. Army STARS Elements includes... Atom Builder - A simple, powerful tool that let’s you construct and discover atoms. Add and subtract protons, neutrons, and electrons and see, in 3D, what you can create. SmashBond - Use the octet rule to bond elements and score points in SmashBond. Swap elements to make 2, 3, or 4 element bonds, and grab bonuses to get a SMASHBOND. It’s a really fun way to help you become familiar with the octet rule and learn common chemical bonds by their type, symbol, name and Lewis dot diagram. Periodic Table - Use the table to view trends and detailed information about each of the 118 elements. See an interactive Bohr’s model and learn interesting facts about the elements. It’s like a regular periodic table, but interactive and fun. STARS Challenge - When you’re ready to test your knowledge, take the STARS Challenge. You’ll be presented with questions in 3 areas (elements, bonding, and atomic configuration). Can you master them all? No matter what your level of experience with chemistry, U.S. Army STARS Elements makes learning fun. Easy to use lesson plans and teacher guides are available at http://usarmystars.com/lessons to help integrate Elements into the classroom.

About

Elemental Rx

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
Read full description

Elemental Rx is an exceptional app that serves as your ultimate companion for exploring the fascinating world of elements through an interactive Periodic Table. Whether you are a student, a professional, or simply curious about chemistry, this beautifully designed app provides a seamless experience that combines knowledge, interactivity, and aesthetics. Key Features: 1. Interactive Periodic Table: The app allows you to explore the Periodic Table effortlessly. By tapping on any element, you can access detailed information about its properties, atomic structure, and much more. This feature enables you to delve deeper into the characteristics of each element. 2. Color-Coded Elements: Personalize your learning experience by customizing the colors of elements based on their properties such as metallicity, atomic radius, electronegativity, and more. This visual representation allows you to easily visualize patterns and trends within the periodic table. 3. Anecdotes and History: Unearth the intriguing stories behind each element with fascinating anecdotes and historical facts. Discover how these elements were discovered, their significance, and the impact they have had on shaping our world. This feature adds an extra layer of interest and context to your exploration. 4. Electron Shell Visualization: Gain a deeper understanding of atomic structure through interactive visualizations of electron shells. This feature helps you grasp the complexities of valence electrons and electron configurations, providing a comprehensive understanding of how elements interact chemically. 5. Atomic Emission Spectra: Explore the mesmerizing world of atomic emission spectra. Learn about the unique spectral lines emitted by elements and the valuable insights they provide in identifying elements and their properties. This feature allows you to visualize and understand the spectral fingerprint of each element. 6. Visualization of Atomic Crystal Structure: Dive into the three-dimensional world of atomic crystal structures. Explore the arrangement of atoms within different crystal lattices and gain insights into the properties and behavior of materials. This feature provides a captivating visualization of the fundamental building blocks of solids. 7. Beautiful UI and Intuitive Design: Immerse yourself in a visually stunning and user-friendly interface that enhances your exploration of the periodic table. Elemental Rx's captivating design ensures an enjoyable and seamless experience, allowing you to effortlessly navigate and engage with the app's features. Unlock the mysteries of chemistry and embark on a captivating journey through the elements with Elemental Rx. Whether you're a chemistry enthusiast or simply curious about the building blocks of our universe, this app is your go-to resource for knowledge and discovery. With its combination of interactive features, engaging anecdotes, beautiful design, atomic emission spectra visualization, and atomic crystal structure visualization, Elemental Rx provides an exceptional platform to unleash your inner scientist and explore the wonders of the periodic table.

Screenshots

U.S. Army STARS Elements4 screens
Elemental Rx3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
U.S. Army STARS Elements versus Elemental Rx: the parameters behind the verdict, then further details
ParameterU.S. Army STARS ElementsElemental Rx
PriceFreeFree
Rating4.6 (19 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings19 — better2
Update frequencyEvery 8 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS11.0 — better12.0
Further details — not scored
Size213 MB74 MB
Age rating9+4+
DeveloperArmy Game StudioProteverse LLC

Customer experience

U.S. Army STARS Elements

All ratings18 ratings
Positive88.9%
Neutral5.6%
Negative5.6%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Elemental Rx

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

U.S. Army STARS Elements

No in-app purchases

None

Elemental Rx

No in-app purchases

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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