Calculator++

Calculator++ is a modern math tool that keeps everyday calculations, scientific functions, matrices, and currency conversion in one clean, responsive app. Built with Material Design, it focuses on speed, clarity, and accurate results—so you can solve classroom problems, engineering tasks, or daily math without switching apps. What you can do Basic & scientific math in a single keypad Trigonometry, logarithms, exponentials, powers, roots, factorials Angle modes: Degrees (DEG) and Radians (RAD) Parentheses & operator precedence for multi-step expressions Matrices & linear systems: determinant, inverse, and solve Ax = b Currency conversion with online exchange rates and a clear “last updated” time Material Design UI that scales well on phones and tablets Dark mode for comfortable use at night Core & Scientific Calculator Perform everyday arithmetic quickly and view expressions as you type, so you always know what’s being calculated. When you need more, switch to scientific keys: Powers (xʸ), roots (√, ⁿ√x), factorial (n!) Natural and common logs (ln, log₁₀), exponentials (eˣ) Trig and inverse trig (sin, cos, tan, asin, acos, atan) Toggle DEG/RAD instantly to match your problem set Careful precedence handling and clear error messages help you avoid surprises and catch input mistakes early. Matrices & Linear Algebra Work with matrices right inside the app—handy for homework checks, quick verifications, or field calculations: Create matrices of common practical sizes Compute determinant and inverse (when defined) Solve linear systems (Ax = b) without extra tools The interface guides you through each step so you can focus on the math, not the mechanics. Currency Converter (Online Rates) Convert between major world currencies with current rates fetched over the network. You’ll see: A clear timestamp showing when rates were last updated A simple layout that emphasizes input amount, base currency, and result Notes: Currency data is intended for general reference; please verify important financial decisions with official sources. The calculator and matrix tools work offline; network access is only used to refresh currency rates. Designed for Vietnamese Users The application interface is currently in Vietnamese (Tiếng Việt) for a familiar, straightforward experience. English UI may be considered in the future, but all core features already work seamlessly today. Comfortable, Reliable, and Practical Material Design for consistency and readability Dark mode to reduce eye strain Responsive layouts that adapt to your screen size Thoughtful warnings when an operation is not defined (e.g., non-invertible matrix) Privacy & Permissions Calculator++ performs core calculations offline and does not require personal permissions such as contacts or location. Network access is used only to update currency exchange rates. Whether you’re checking homework, verifying a matrix solution, or converting prices while planning a purchase, Calculator++ keeps powerful math tools in a single, clear app—built for speed, accuracy, and everyday practicality.