U.S. Army STARS Elements vs iORA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Atom Builder
- SmashBond game
- Interactive Periodic Table
- STARS Challenge quiz
- 3D atom construction
- Bohr's model visualization
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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.
iORA
Visualize chemical reactions in 3D using quantum-mechanical simulations. This free, interactive application makes complex chemistry concepts accessible and engaging for learners.
- 3D chemical reaction visualization
- Quantum-mechanical simulations
- Interactive learning
- Easy to use interface
- Educational tool
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iORA is a free, easy to use, highly interactive smartphone application that provides 3D visualization of chemical reactions based on quantum-mechanical simulations.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | U.S. Army STARS Elements | iORA |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (18 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 18 — better | 12 |
| Update frequency | Every 8 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.3 |
| Further details — not scored | ||
| Size | 213 MB | 40 MB |
| Age rating | 9+ | 4+ |
| Developer | Army Game Studio | Daniel Ess |
Customer experience
U.S. Army STARS Elements
iORA
In-app purchases
U.S. Army STARS Elements
No in-app purchases
iORA
No in-app purchases
Questions
Is U.S. Army STARS Elements free?
Is iORA free?
Which has better reviews, U.S. Army STARS Elements or iORA?
Do U.S. Army STARS Elements or iORA have ads?
Which is updated more often, U.S. Army STARS Elements or iORA?
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