Physics Formulas vs Equation Encyclopedia

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/

Master 3,000+ Formulas, 170+ Expert Revision Guides, and AI Study Tools Equation Encyclopedia brings GCSE, A-Level, IB, AP, university, and professional study into one app. Search 3,000+ formulas across Mathematics, Physics, Chemistry, Biology, Engineering, Finance, Geography, Medicine, Computing, Geology, Psychology, Economics, Sociology, and Quantum Computing, with offline access after login. FORMULA LIBRARY - 3,000+ formulas across GCSE, A-Level, IB, AP, and university pathways - Coverage mapped across AQA, Edexcel, OCR, WJEC/Eduqas, Cambridge, IB, AP, and broader UK, US, and international systems - Interactive formula preview with intuition, derivations, rearrangements, mnemonics, comparisons, and step-by-step practice problem solutions EXPERT REVISION GUIDES - 170+ Expert Revision Guides built from formulas, derivations, rearrangements, mnemonics, intuition, history, and practice - 3 free sample guides on the free plan, with the full guide library available on paid plans - Extra spreadsheet, coding, and reference study packs for broader revision workflows 50+ INTERACTIVE GAMES - Equation Zillionaire, Solve It, Unit Crunch, Symbol Rush, Formula Run, Equation Sleuth, Logic Linker, and more - XP levels, daily streaks, achievement badges, and global leaderboards AI-POWERED TOOLS - AI Equation Mentor to explain, rearrange, and solve formulas step by step - AI Image Scanner to identify equations from photos - AI Study Tool, AI guide generation, and AI-assisted calculator building - AI spreadsheet and coding explainers for practical problem solving CREATE, PROGRESS, AND SCIENTISTS - Create page supports typing, uploading handwriting, or drawing equations before sending them through Store AI - Progress includes Equation Skill Check, weak-equation analytics, subject insights, and next-best-study actions - Separate scientist experiences: collect 100 scientist cards in Scientist Collection, then explore 800+ scientists on the broader Scientists Page - Expanded discovery pages, including Timeline and Wiki coverage, for richer browsing across topics and people REFERENCE AND LIFESTYLE TOOLS - Full Periodic Table, Physical Constants, Unit Conversions, Greek Alphabet, and Math Rules - 468+ Did You Know facts and equation-linked historical context - 6 lifestyle and finance calculators: Salary Cost-of-Living Adjuster, Portfolio Growth Planner, Mortgage Cost Planner, Rent vs Buy Comparator, Emergency Fund Planner, and Budget Split Planner PERFECT FOR GCSE, A-Level, IB, AP, university, finance professionals, developers, Excel users, and independent learners UI available in English plus 17 translated languages. Deeper formula, calculator, Excel, coding, and study content is localized across 10 translated data languages. PLANS - Free: full library access, sample Expert Revision Guides, games, and reference tools - Plus: GBP 5.99/month for unlimited saves, full Expert Revision Guide access, create tools, exports, and ad-free study - Pro: GBP 9.99/month for everything in Plus plus AI Mentor, Image Scanner, AI study workflows, and advanced creation tools - Ultra: GBP 14.99/month for everything in Pro plus the highest AI priority and heavier daily AI usage Zero ads on all paid plans. Terms of Use: https://equationencyclopedia.com/terms Privacy Policy: https://equationencyclopedia.com/privacy About Us: https://equationencyclopedia.com/about Idea illustrations by Storyset