Photronium vs MARVLS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Photronium
Access over 360 physics equations with clear explanations and powerful search tools. Test your knowledge with custom quizzes and learn offline anywhere, anytime. This educational reference is designed for learners of all levels.
- 360+ physics equations
- Offline access
- Intelligent Search
- Symbol Search
- Customizable quizzes
- Bookmarking
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With over 360 physics equations explained in a clear, easy-to-understand way and a flexible search system, Photronium can be an immensely helpful tool for learners of any level. PHYSICS AT YOUR FINGERTIPS Look up any physics equation, with topics including: • Motion in One Dimension • Projectile Motion • Laws of Motion • Uniform Circular Motion • Work and Energy • Linear Momentum and Collisions • Rotation of Rigid Bodies • Universal Gravitation • Fluid Mechanics • Oscillatory Motion • Wave Motion • Sound Waves • Thermodynamics • Electromagnetism • Light and Optics • Relativity • Quantum Physics All available offline, so you can learn anywhere, anytime. MEMORY QUIZ Test your knowledge by taking quizzes! Bookmark any section that interests you, and Photronium will automatically create quizzes based on those bookmarks. INTELLIGENT SEARCH & SYMBOL SEARCH Just type anything. Intelligent Search can work with the most ambiguous descriptions, like “atom”, “lens”, “radiation”, “Newton”, and “phase angle”. And when you need to find a physics formula without any description, Symbol Search provides a discovery experience you’ve never seen before. FREE & NO ADS Photronium comes with over 360 physics equations, Intelligent Search, Symbol Search, Widgets, Bookmarks, Suggested Websites, and Dark Mode all available for free and ad-free. With Extras, you can purchase more features and support the app’s development. Have questions or feedback? From the app, open Extras and send a report.
MARVLS
Explore quantum computing concepts through interactive augmented reality models. Requires a Merge Cube to visualize and manipulate topics like superposition and entanglement. Navigate through various educational modules to deepen your understanding.
- Augmented reality visualization
- Interactive quantum concepts
- Merge Cube integration
- Topics: superposition, entanglement, qubits
- Logic gates visualization
- Nuclear and electron spin models
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View augmented reality models of quantum computing concepts through your phone. You'll need a Merge Cube (link included to download). Click on different button to navigate to different topics. Tap the camera icon and point your camera towards the Merge Cube to visualize and interact with our MARVLS. Topics include observer dependency, superposition, entanglement, bits, qubits, nuclear and electron spin, logic gates, and trapped ions. Developer support provided by Leo Vanderlofske.
Screenshots
Verdict
The clearest difference is rating: Photronium at 5.0 against MARVLS's 1.0. Photronium also leads on review sentiment (100% vs 67%) and ratings volume (8 vs 1). MARVLS's advantage is in-app purchases (none vs 1). On price, update cadence, ads and device support 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. Photronium sells 1 one-off in-app purchase. MARVLS asks for nothing beyond the download.
Photronium holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Photronium has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Photronium's written reviews are positive against 67% of MARVLS's.
Photronium ships an update monthly, MARVLS every 4 weeks. The most recent releases landed on September 18, 2026 and September 9, 2026 respectively.
| Parameter | Photronium | MARVLS |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 8 — better | 1 |
| Update frequency | Monthly | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 59 MB | 168 MB |
| Age rating | 4+ | 4+ |
| Developer | Hao Nguyen | Michele McColgan |
Customer experience
Photronium
MARVLS
In-app purchases
Photronium
- Multicolored Bookmarks$0.99
MARVLS
No in-app purchases









