Physics Formulas vs STEMReader

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/

STEMReader makes it easier to read, navigate, and study technical textbooks and PDFs. Instead of constantly scrolling through hundreds of pages to find an equation, figure, chapter, or exercise, STEMReader analyzes your document and builds tools around its structure. With STEMReader, you can: • Jump to equation and figure references Tap recognized references while reading to quickly view the referenced equation or figure without losing your place. • Navigate textbook contents Browse the structure of your textbook and move quickly between sections. • Find and work through problems View detected exercises and problems without searching through the entire document. • Work with exercises using Problem Solver Open detected textbook problems in a focused workspace designed to make working through exercises easier. • Take PDF notes Keep your notes connected to the documents you are reading. • Use scanned textbooks and PDFs STEMReader is designed to work with technical documents, including textbooks that were originally scanned rather than created as digital PDFs. Whether you are studying mathematics, physics, engineering, or another technical subject, STEMReader helps turn a static textbook into a more useful workspace for learning. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/