Or Simplex Step-by-Step Solver

📘 OR Simplex Step-by-Step — the most complete Operations Research solver on Android. Built and validated with professors at Kyiv Polytechnic University, used by thousands of students worldwide. ━━━━━━━━━━━━━━━━━━━━━━━━━ 🧮 EVERY METHOD YOU NEED ━━━━━━━━━━━━━━━━━━━━━━━━━ 🔢 Simplex Method — classical, Two-Phase, and Big-M 🎯 Integer programming — Branch & Bound 📈 2D graphical method — feasible region, objective line, optimum 🧊 NEW: 3D polytope visualization for 3-variable LP — rotate and explore the feasible region 🔍 Sensitivity & Post-Optimal Analysis — ranges, shadow prices, RHS intervals 🚛 Transportation Problem — North-West Corner, Least-Cost, Vogel's Approximation (VAM) 🔄 MODI / U-V Method — optimality test and refinement ✅ Assignment Problem — Hungarian Algorithm ⏱️ Job Sequencing — 2, 3, and N-machine using Johnson's Algorithm ━━━━━━━━━━━━━━━━━━━━━━━━━ ⭐ WHY STUDENTS CHOOSE IT ━━━━━━━━━━━━━━━━━━━━━━━━━ 📝 Step-by-step explanations — every iteration commented in plain language ➗ Exact fraction arithmetic — no rounding errors, ever ⌨️ Dedicated math keyboard — built for fractions, signs, and decimals 📂 Problem history — save, reopen, and edit past problems 🌍 8 languages — English, Español, Français, Português, Русский, Українська, العربية, فارسی ⛔ 100% offline — no account, no internet, no tracking of your work