Comparison

Physics Constants Library vs COMath Premium

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

Head to head
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 β€’ 20+ Fundamental Constants – Gravity, Planck’s constant, electron charge, speed of light, and more. β€’ Smart Search & Filters – Quickly find constants by name, symbol, or value. β€’ Multi-Unit Support – Switch between SI, CGS, Imperial, and other unit systems. β€’ Interactive Learning – Use flashcards, quizzes, and study modes to strengthen memory. β€’ Professional Tools – Unit converter, calculator, and built-in formula helper. β€’ Offline Access – Access all content anytime, without internet. Key Features Constants Library β€’ Covers mechanics, quantum physics, thermodynamics, electromagnetism, and more. β€’ Includes historical context, real-world applications, and related concepts. Learning Center β€’ Flashcards with smart repetition for long-term retention. β€’ Quizzes with adjustable difficulty levels. β€’ Study progress tracking to stay motivated. Professional Tools β€’ Advanced unit converter with 25+ categories. β€’ Scientific calculator with constants built-in. β€’ Formula helper to apply equations instantly. Modern Experience β€’ Clean, elegant interface designed for clarity. β€’ Dark mode, 10 app themes - System, Light, Dark, Cosmic, Quantum, Sunset, Ocean, Forest, Aurora, Midnight and accessibility support. β€’ Favorites tab for quick access to your most-used constants. Perfect For β€’ Students – Learn and memorize constants with ease. β€’ Teachers – Enhance lessons with interactive study tools. β€’ Researchers & Engineers – Reliable, quick reference during work. β€’ 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!

About

COMath Premium

Features
Read full description

COMath Premium makes it easy to practice math, solve word problems, learn algebra step by step, and enjoy number puzzles such as Sudoku, Calcudoku, and Fillomino. Premium includes full access, no ads, and no privacy tracking. New to COMath? Try the ad-supported COMath first to experience the same core features before choosing Premium.

Screenshots

Physics Constants Library4 screens
COMath Premium4 screens

Verdict

The call

The clearest difference is price: Physics Constants Library at Free against COMath Premium's $0.99. COMath Premium's advantage is in-app purchases (none vs 1) and ads (none vs shown).

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Physics Constants Library is free to download; COMath Premium costs $0.99 up front. Physics Constants Library sells 1 one-off in-app purchase. COMath Premium asks for nothing beyond the download.

UpkeepUpdate frequency

Physics Constants Library ships an update every 7 months, COMath Premium every 2 weeks. The most recent releases landed on October 22, 2026 and October 28, 2026 respectively.

Scorecard6 real differences Β· 0 level
Physics Constants Library versus COMath Premium: the parameters behind the verdict, then further details
ParameterPhysics Constants LibraryCOMath Premium
PriceFree β€” better$0.99
Update frequencyEvery 7 monthsEvery 2 weeks β€” better
AdsYesNo β€” better
In-app purchasesYesNo β€” better
DevicesiPhoneiPhone, iPad, iPod β€” better
Requires iOS18.415.0 β€” better
Further details β€” not scored
Size10 MB85 MB
Age rating4+4+
DeveloperChatStick Company LimitedJianfeng Wu

In-app purchases

1 purchases

Physics Constants Library

One-time1
  • Unlock All Features$2.99
None

COMath Premium

No in-app purchases

Questions

Is Physics Constants Library free?
Physics Constants Library is free to download, with in-app purchases available.
Is COMath Premium free?
COMath Premium costs $0.99, with no in-app purchases.
Do Physics Constants Library or COMath Premium have ads?
Physics Constants Library shows ads; COMath Premium does not.
Which is updated more often, Physics Constants Library or COMath Premium?
Physics Constants Library ships an update every 7 months, and COMath Premium every 2 weeks. Most recently, Physics Constants Library was updated on October 22, 2026 and COMath Premium on October 28, 2026.

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