Engineering Formulas vs Vernac

EngiRef is the all-in-one engineering reference app that works 100% offline. Access formulas, material properties, reference tables, and a powerful unit converter - all without internet connection. FORMULA LIBRARY Browse 140+ essential engineering formulas organized by discipline: • Mechanical Engineering: stress, strain, torque, power, gear ratios, spring design • Electrical Engineering: Ohm's law, AC/DC circuits, impedance, resonance • Civil/Structural: beam deflection, Euler buckling, Manning's equation • Thermodynamics: ideal gas law, Carnot efficiency, heat transfer • Fluid Mechanics: Bernoulli, Reynolds number, Darcy-Weisbach • Materials Science: Young's modulus, Poisson's ratio, fatigue analysis BUILT-IN CALCULATOR Enter your values and get instant results. Every calculation shows step-by-step solutions so you understand the process, not just the answer. Perfect for learning and exam preparation. MATERIALS DATABASE Access properties for 55+ engineering materials: • Carbon steels (AISI 1018, 1045, 4140, 4340) • Stainless steels (304, 316, 17-4 PH) • Aluminum alloys (6061-T6, 7075-T6, 2024-T3) • Titanium, copper, nickel alloys • Plastics (ABS, HDPE, Nylon, PEEK, Delrin) • Composites, concrete, and wood Compare up to 3 materials side-by-side with density, tensile strength, elastic modulus, thermal conductivity, and more. REFERENCE TABLES • Bolt specifications: Metric M3-M36, SAE/Imperial sizes • Pipe schedules: NPS dimensions and wall thickness • Wire gauges: AWG 0000-40 with ampacity ratings UNIT CONVERTER Convert between 16 categories including length, pressure, temperature, force, energy, flow rate, and viscosity. Accessible from any screen via slide-over panel. PHYSICAL CONSTANTS Quick reference for 34 constants including speed of light, gravitational constant, Boltzmann constant, Avogadro's number, and more. QUIZ MODE Test your knowledge with flashcard-style quizzes. Track progress across all disciplines. Prepare for FE and PE exams. ADDITIONAL FEATURES • Dark and light themes (follows system setting) • Favorites to bookmark frequently used formulas • Calculation history with timestamps • Create and save custom formulas • Export and share your data • LaTeX formula rendering • iPad-optimized layouts PRIVACY FOCUSED EngiRef collects zero personal data. No analytics, no ads. All your calculations and favorites stay on your device. We believe engineering tools should respect your privacy. Whether you are a student preparing for exams, a working engineer needing quick field reference, or a technician looking for material specs, EngiRef puts essential engineering knowledge in your pocket. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

You're smarter than you sound. Vernac closes the gap, one word at a time, in context you'll actually use. Vernac is an AI vocabulary coach that learns about your life, your job, and your goals, then delivers five words a day wrapped in example sentences written for your world. A definition tells you what a word means. Context tells you when it's yours. WHY VERNAC WORKS A word wrapped in a sentence from your own life has somewhere to land. The AI writes that sentence for you, every word, every time. Then spaced repetition (tuned by the SM-2 algorithm) brings each word back right before you'd forget it, so vocabulary moves from short-term memory to words you actually use. HOW IT WORKS 1. Tell us about you: five questions, thirty seconds 2. Swipe your daily five: two short sessions a day 3. Words return right on time: spaced repetition does the rest WHAT YOU GET - 10,000+ words across 23 categories and 5 difficulty levels - AI-personalized example sentences for your job and goals - Five practice modes: meaning match, fill the gap, sentence building, pronunciation, and speed rounds - A vocabulary level test with 30 adaptive questions that place you on a five-level scale - Word of the Day, streaks, and saved collections - Widgets and lock screen wallpapers that keep words in view BUILT FOR HOW YOU TALK - Professionals: sharper meetings, tighter emails, language that lands - Students: GRE, SAT, IELTS, and TOEFL vocabulary built into your daily feed - Word lovers: 23 categories of rare, beautiful words, no exam required FREE TO START Unlimited daily words, meaning match practice, streak tracking, and saved collections. Free forever, no credit card required. Vernac Pro adds AI-personalized sentences, all practice modes, the level test, widgets, streak freezes, and an ad-free experience. 3-day free trial. Cancel anytime. Your first five words are waiting. Download Vernac and learn your daily five in under a minute. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/