Physics Formulas vs Kemistri

PhysRef is the complete physics formula reference designed for students, engineers, and science enthusiasts. Access hundreds of formulas, physical constants, and built-in calculators - all without internet connection. COMPREHENSIVE FORMULA DATABASE Browse formulas organized by topic: Mechanics, Thermodynamics, Waves, Electricity and Magnetism, Optics, and Modern Physics. Each formula includes variable definitions, units, and related concepts. BUILT-IN CALCULATORS Stop doing manual calculations. Enter your known values and instantly compute the unknown variable. Every calculator validates inputs and displays results with appropriate units. PHYSICAL CONSTANTS TABLE Quick access to fundamental constants including speed of light, gravitational constant, Planck's constant, electron mass, Boltzmann constant, and dozens more. All values use standard reference data. UNIT CONVERTER Convert between units across 14 categories: length, mass, time, velocity, acceleration, force, energy, power, pressure, temperature, electric charge, electric current, angle, and frequency. PERSONAL NOTES Add your own notes to any formula. Perfect for exam prep, recording problem-solving strategies, or marking formulas you find tricky. FORMULA DERIVATIONS Understand where formulas come from. See step-by-step derivations that connect fundamental principles to the equations you use. WORKS COMPLETELY OFFLINE All content is bundled in the app. Study on airplanes, in basements, or anywhere without signal. No account required. No internet needed. DESIGNED FOR STUDENTS Covers content from AP Physics 1, AP Physics 2, AP Physics C, IB Physics, and introductory university physics courses. Whether you are preparing for an exam or solving homework problems, PhysRef has you covered. PRIVACY FIRST Your data stays on your device. We do not collect personal information. No tracking. No analytics. No ads. FEATURES SUMMARY - Formula browser organized by physics topic - Search by formula name, variable, or concept - Calculators for solving problems - Physical constants with precise values - Unit converter with 14 categories - Personal notes on any formula - Formula derivations and explanations - Related formulas and connections - Bookmarks for quick access - Search history - Dark and light themes - 100% offline functionality Built for physics students who want a reliable, ad-free reference that works anywhere. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Chemistry does not have to be boring, confusing or stressful. Kemistri is an interactive chemistry learning game that helps students understand important concepts, practise problem-solving and enjoy learning through guided gameplay. BUILD UNDERSTANDING, NOT JUST MEMORY Kemistri acts as a friendly learning guide, helping you build strong chemistry foundations instead of simply memorising facts and formulas. Through interactive challenges, you can: • Explore the periodic table • Understand atomic structure and electron arrangement • Build electronic configurations step by step • Apply electron-filling rules • Construct molecules and chemical structures • Identify different types of chemical reactions • Practise balancing chemical equations • Explore periodic trends • Learn VSEPR theory and molecular geometry • Understand hybridisation • Explore acids, bases and the pH scale • Solve chemistry problems logically Helpful explanations and hints guide you when needed, keeping learning rewarding rather than frustrating. INTERACTIVE CHEMISTRY ACTIVITIES Kemistri contains a growing collection of chemistry games and challenges, including: • Placing elements in their correct periodic-table positions • Arranging elements into the correct groups and periods • Building electronic configurations for different atoms • Filling atomic orbitals using electron rules • Constructing molecules • Recognising reaction types • Balancing chemical reactions • Exploring atomic radius, ionisation energy and electronegativity • Learning molecular shapes and chemical bonding • Experimenting with interactive chemistry tools Each activity introduces concepts through interaction, repetition and progressively more challenging levels. DAILY LEARNING AND DISCOVERY Keep learning with daily chemistry challenges, build your study streak and unlock achievements as you progress. Explore science legends, chemistry history, fascinating facts and jokes that make learning more memorable and enjoyable. MADE FOR CHEMISTRY REVISION Kemistri is suitable for: • School chemistry revision • Students beginning to learn chemistry • GCSE, A-level and equivalent learners • Daily concept practice • Curious learners who enjoy science Its calm, game-based approach makes revision more enjoyable and helps students practise without the pressure of a traditional test. LEARN AT YOUR OWN PACE Whether chemistry is completely new to you or you want another way to revise familiar topics, Kemistri allows you to progress gradually. Start with the fundamentals, complete interactive challenges and build confidence as new topics are introduced. BUILT WITH PASSION Kemistri is created by a small independent team focused on making science education more engaging and accessible. Your support helps us develop new chemistry content, improve the experience and expand language access. START LEARNING TODAY Explore the periodic table, atomic structure, electronic configurations, molecules, reactions and other core chemistry concepts in a smarter and more enjoyable way. Download Kemistri and begin your chemistry learning journey today. Levels 1–2 are free to play. Access to levels 3 onwards and some additional features requires a subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.edbetter.uk/mobile-privacy/