Math Deep Solver is a comprehensive, lightweight math learning app designed to work completely offline without internet or Wi-Fi. It combines Geometry, Algebra, Calculus, Arithmetic, and interactive graphing into one powerful educational tool that helps students understand mathematics visually and step by step.

▣ Geometry Section
Explore plane and solid geometry with formulas, explanations, and interactive diagrams. Supports triangles, rectangles, circles, cubes, spheres, cylinders, cones, pyramids, and prisms with area, perimeter, surface area, and volume calculations. Users can create interactive geometric drawings by entering side lengths, angles, and dimensions. Shapes are generated dynamically with labeled measurements. Supports Pythagoras' theorem, Euclid's theorem, Cyclic Quadrilateral theorem, angle relationships, and geometric validation.

▣ Algebra Section
Solve and visualize quadratic equations with roots, discriminant, axis of symmetry, and parabola graphs. Also supports linear equations, systems of equations, slopes, algebraic expressions, polynomial simplification, factorization, binomial expansion, arithmetic and geometric progressions, inequalities, and linear programming with graphical solutions and feasible region visualization. All topics include explanations, graphing, and interactive calculations.

▣ Calculus Section (Differentiation & Integration)
Learn derivatives through symbolic and numerical computation. Analyzes critical points, inflection points, increasing/decreasing intervals, limits, continuity, definite integration, areas under curves, applications of derivatives, and differentiation of volumes. Supports polynomial, trigonometric, exponential, logarithmic, and composite functions with step-by-step differentiation and dynamic graph updates. Includes a comprehensive reference section with essential calculus formulas and laws.

▣ Arithmetic & Number Theory Section (Newly Added)
Focuses on fundamental arithmetic and practical calculations including percentage, ratio and proportion, common fractions, roots and exponents, common factor, prime numbers and factorization, rounding and significant figures, simple and compound interest calculator, and unit conversion calculator for length, mass, volume, temperature, and more.

▣ Built-in Tools for Better Learning
- Simple and scientific calculator for advanced operations
- Casio calculator simulator for real-world practice
- Digital notepad for drawing and writing freely on screen using your finger with multiple colors
- Number system converter (binary, octal, decimal, hexadecimal) with real-time validation
- Interactive graphing system with zooming, panning, and smooth rendering

▣ Sharing & Collaboration
Share graphs, solutions, geometric drawings, and calculation results with classmates and teachers for classroom learning, homework, and self-study.

▣ Offline Functionality & Privacy
All calculations, graphs, and drawings are processed directly on the device. The app does not collect personal data, requires no internet or Wi-Fi, and contains no tracking systems. Everything works entirely offline.

▣ Performance
Despite powerful functionality, the app size is only about 17.18 MB and is optimized for smooth performance on most Android devices.

In summary, Math Deep Solver provides a complete offline mathematical environment combining geometry, algebra, calculus, arithmetic, interactive graphing, and practical tools in one compact app. It transforms mathematics into a visual, engaging, step-by-step learning experience for students, teachers, and math enthusiasts everywhere.