EngToolBox vs Physics Constants Library

Welcome to EngToolBox , where I have designed this all-in-one app with privacy in mind where all the data is on device and plus the journal that is on Moodtracker in Stress Relief section is safe and secure with Keychain security (you have to set the pin for yourself in the Settings on the app) plus the app is fully operational offline .  The features of the app are: -Multi purpose calculators , from simple calculator with the basic addition , subtraction ,multiplication and division that are operations you can do in other sections also like binary calculator with some more features included , octal calculator , Hexadecimal calculator and also base conversion calculator and also logarithmic calculator to more advanced calculators like symbolic and numerical calculator. -Stress Relief section where you can find tips breathing exercises and also a full on device journal called Mood tracker. -A game for engagement where you have to try finding the most optimal way to connect the battery to Led named Circuit Builder. -A section about Formulas where you can find helpful formulas and explanation about different courses in computer engineering. And also a section about timers where you have different presets for productivity timers like Pomodoro timer , and the settings section that you can enter you PIN. Version 1.0: Perfomance improvments and also a cleaner and a more user-friendly interface. EngToolBox is an app designed with privacy on mind where is fully operational offline and no data is being collected.Download the app and I hope you will find the features useful. If there is any request for new feature or bug you encounter don't hesitate to contact me .

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!