MARVLS vs STRUCT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
STRUCT
Explore structural engineering concepts in augmented reality. Visualize how beams and bridges react to loads in your own space, offering an interactive and engaging learning experience for students. No complex setup required, just your device and camera.
- Augmented reality visualization
- Interactive load simulations
- Pre-loaded finite element models
- Classroom and independent learning tool
- 3D model interaction
- Camera access for AR
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Have you ever wanted to see how a beam or bridge you encounter in everyday life reacts when load is applied? What if you could see these in your space at all angles, without having to specify material types, meshing or boundary conditions? STRUCT-AR utilizes finite element models pre-loaded into this mobile AR application that allows users to interact and engage with the models on their mobile device or tablet. This can be used as a complementary teaching tool for enhancing personalized learning wherein students can leverage the technology as a learning companion both within the classroom and outside to better understand structural behaviors and mechanisms that are challenging to convey in a traditional 2D learning environment. To use the app, you must allow it to access your camera. No identifiable data is stored on any server and you can revoke access at any time.
Screenshots
Verdict
The clearest difference is update cadence: STRUCT at every 4 weeks against MARVLS's every 4 months. STRUCT also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, 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.
MARVLS ships an update every 4 months, STRUCT every 4 weeks. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.
| Parameter | MARVLS | STRUCT |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 242 MB | 165 MB |
| Age rating | 9+ | 4+ |
| Developer | Michele McColgan | UVA Apps, LLC |
In-app purchases
MARVLS
No in-app purchases
STRUCT
No in-app purchases









