MARVLS vs Physics Constants Library
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Physics Constants Library
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Discover the building blocks of our universe with Physics Constants Library – the ultimate reference and learning tool for students, educators, and professionals. Whether you’re preparing for exams, teaching in the classroom, or working on research, this app puts the most important physics constants and tools at your fingertips. What You’ll Get • 20+ Fundamental Constants – Gravity, Planck’s constant, electron charge, speed of light, and more. • Smart Search & Filters – Quickly find constants by name, symbol, or value. • Multi-Unit Support – Switch between SI, CGS, Imperial, and other unit systems. • Interactive Learning – Use flashcards, quizzes, and study modes to strengthen memory. • Professional Tools – Unit converter, calculator, and built-in formula helper. • Offline Access – Access all content anytime, without internet. Key Features Constants Library • Covers mechanics, quantum physics, thermodynamics, electromagnetism, and more. • Includes historical context, real-world applications, and related concepts. Learning Center • Flashcards with smart repetition for long-term retention. • Quizzes with adjustable difficulty levels. • Study progress tracking to stay motivated. Professional Tools • Advanced unit converter with 25+ categories. • Scientific calculator with constants built-in. • Formula helper to apply equations instantly. Modern Experience • Clean, elegant interface designed for clarity. • Dark mode, 10 app themes - System, Light, Dark, Cosmic, Quantum, Sunset, Ocean, Forest, Aurora, Midnight and accessibility support. • Favorites tab for quick access to your most-used constants. Perfect For • Students – Learn and memorize constants with ease. • Teachers – Enhance lessons with interactive study tools. • Researchers & Engineers – Reliable, quick reference during work. • Enthusiasts – Explore the fundamental constants that shape our world. Data Accuracy You Can Trust All values are based on CODATA 2018 recommendations and NIST standards, ensuring precision for both academic and professional use. Upgrade for More Unlock premium to access advanced study modes, unlimited practice, and detailed progress analytics. Download Physics Constants Library today and take your physics knowledge to the next level!
Screenshots
Verdict
The clearest difference is in-app purchases: MARVLS at none against Physics Constants Library's 1. MARVLS also leads on ads (none vs shown) and update cadence (every 4 weeks vs every 7 months). On price, device support and iOS requirement 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. Physics Constants Library sells 1 one-off in-app purchase. MARVLS asks for nothing beyond the download.
MARVLS ships an update every 4 weeks, Physics Constants Library every 7 months. The most recent releases landed on September 27, 2026 and September 20, 2026 respectively.
| Parameter | MARVLS | Physics Constants Library |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 weeks — better | Every 7 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 — better | 18.4 |
| Further details — not scored | ||
| Size | 168 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Michele McColgan | ChatStick Company Limited |
In-app purchases
MARVLS
No in-app purchases
Physics Constants Library
- Unlock All Features$2.99
Questions
Is MARVLS free?
Is Physics Constants Library free?
Do MARVLS or Physics Constants Library have ads?
Which is updated more often, MARVLS or Physics Constants Library?
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