Comparison

Nuclear Wallet Cards vs Physics Constants Library

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Nuclear Wallet Cards

Access comprehensive nuclear data for every known nuclide in an interactive format. Explore ground and isomeric state properties with powerful search and filtering tools. This authoritative reference is ideal for researchers, educators, and students.

Highlights
  • Comprehensive nuclide data
  • Powerful search and filter
  • Interactive periodic table
  • Authoritative data source
  • User-friendly interface
Features
Read full description

Explore nuclear data within Nuclear Wallet Cards, the comprehensive source for ground and isomeric state properties of every known nuclide. Based on the original reference booklet from the National Nuclear Data Center (NNDC) at Brookhaven National Laboratory (BNL), the Nuclear Wallet Cards app delivers authoritative nuclear data in an accessible and interactive format. Key Features: • Powerful Search & Filter: Quickly search by nucleus name or filter datasets by stability, atomic number, neutron count, atomic mass, excitation energy, half-life, abundance, mass excess, spin parity, and branching ratios. • Interactive Periodic Table: Navigate a dynamic periodic table with intuitive pan and zoom gestures. Tap any element to instantly view detailed isotopic datasets. • Reliable & Authoritative Data: Access precise nuclear data that supports research, education, and applied nuclear science. Whether you're a researcher, educator, or student, Nuclear Wallet Cards is your essential, user-friendly reference for all your nuclear data needs. Download now and start exploring nuclear data! Produced and maintained by the National Nuclear Data Center (NNDC) at Brookhaven National Laboratory (BNL).

About

Physics Constants Library

Features
Read full description

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

Nuclear Wallet Cards4 screens
Physics Constants Library4 screens

Verdict

The call

The clearest difference is in-app purchases: Nuclear Wallet Cards at none against Physics Constants Library's 1. Nuclear Wallet Cards also leads on ads (none vs shown) and update cadence (monthly 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Physics Constants Library sells 1 one-off in-app purchase. Nuclear Wallet Cards asks for nothing beyond the download.

UpkeepUpdate frequency

Nuclear Wallet Cards ships an update monthly, Physics Constants Library every 7 months. Both last shipped on October 30, 2026.

Scorecard3 real differences · 6 level
Nuclear Wallet Cards versus Physics Constants Library: the parameters behind the verdict, then further details
ParameterNuclear Wallet CardsPhysics Constants Library
PriceFreeFree
Rating5.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyMonthly — betterEvery 7 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.6 — better18.4
Further details — not scored
Size9 MB10 MB
Age rating4+4+
DeveloperBrookhaven National LaboratoryChatStick Company Limited

In-app purchases

None

Nuclear Wallet Cards

No in-app purchases

1 purchases

Physics Constants Library

One-time1
  • Unlock All Features$2.99

Questions

Is Nuclear Wallet Cards free?
Nuclear Wallet Cards is free to download, with no in-app purchases.
Is Physics Constants Library free?
Physics Constants Library is free to download, with in-app purchases available.
Do Nuclear Wallet Cards or Physics Constants Library have ads?
Physics Constants Library shows ads; Nuclear Wallet Cards does not.
Which is updated more often, Nuclear Wallet Cards or Physics Constants Library?
Nuclear Wallet Cards ships an update monthly, and Physics Constants Library every 7 months. Most recently, Nuclear Wallet Cards was updated on October 30, 2026 and Physics Constants Library on October 30, 2026.

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