iORA vs MARVLS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
MARVLS
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Augmented Reality Models of topics in the first semester of a physics course including vectors, centroids, forces, impulse, momentum, projectiles, circular motion, torque, right-hand rule, and simple harmonic motion. You'll need a Merge Cube ( link included to download from the internet). Click on different button to navigate to different topics. Click on View in AR to view the model. Hold the Merge cube so that your camera can see it well. Move the cube around until you see the model. Click on the buttons to interact with the model. Click the back button to get back to the info screens or to the main screen.
Screenshots
Verdict
The clearest difference is device support: iORA at 3 against MARVLS's 1. iORA also leads on iOS requirement (14.3 vs 18.0). On price, update cadence, ads and in-app purchases 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 ships an update every 2 months, MARVLS every 4 months. The most recent releases landed on October 9, 2026 and October 27, 2026 respectively.
| Parameter | iORA | MARVLS |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (12 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.3 — better | 18.0 |
| Further details — not scored | ||
| Size | 40 MB | 242 MB |
| Age rating | 4+ | 9+ |
| Developer | Daniel Ess | Michele McColgan |
In-app purchases
iORA
No in-app purchases
MARVLS
No in-app purchases
