CalcIUM: Scientific Calculator

CalcIUM is a calculator with an intuitive, modern interface for everyday calculations. Scientific functions, graphs, unit conversion, time calculations, programmer tools, arbitrary-precision arithmetic, and other advanced features are organized into dedicated mini-panels, keeping routine calculations uncluttered and the interface clean. From quick daily calculations to advanced technical work, CalcIUM combines precise arithmetic, flexible graphing, and practical tools in one app. EVERYDAY CALCULATOR • Clear, familiar calculator layout • Fast basic and percentage calculations • Scientific functions available when needed • Smart input and syntax highlighting • Calculation history with comments • No ads and no sign-in required SCIENTIFIC & PRECISION • Operator-precedence engine • Trigonometric and inverse trigonometric functions • Hyperbolic and inverse hyperbolic functions • Logarithmic and exponential functions • Arbitrary-precision decimal arithmetic (BigDecimal) • Complex nested expressions with parentheses • Factorial, permutations, and combinations (nPr, nCr) • Percentage calculations (classic and simple modes) • Multiple rounding modes GRAPHING • Function graphs y = f(x) • Parametric graphs x(t), y(t) • Polar graphs r(θ) • Multi-series rendering with individual colors • First and second derivative visualization • Asymptote detection • Area under the curve (integrals) • 38 visual presets • Graph history with export and sharing options UNIT CONVERSION • 21 categories • 100+ units • Recent conversion history INTERFACE & THEMES • Ten visual themes: Beach Pebbles, Starry Night, Porcelain Wine, Industrial Ember, Nordic Blue, Violet Carbon, Retro Instrument, Moonstone Slate, Cathedral Obsidian, and Sanctum Sky • Beach Pebbles and Starry Night are included for free; eight additional themes are available with PRO • Each theme has its own fonts, button shapes, colors, shadows, status-bar styling, and optional display texture • Visual Theme Picker with theme previews • Direct access to the Extension Panel from the main menu • Ten interface languages: English, Russian, Ukrainian, German, Spanish, French, Hungarian, Portuguese (Brazil), Hindi, and Japanese • Customizable display format NUMBER SYSTEMS • Binary, octal, decimal, and hexadecimal • Bitwise operations (AND, OR, XOR, NOT, shifts) • Configurable word width (8 / 16 / 32 / 64 bit) • Signed and unsigned modes ADDITIONAL TOOLS • Extension Panel with quick access to additional calculator tools • Time and duration calculations • DMS (degrees, minutes, seconds) conversion • Number analysis (sign, integer and fractional parts, parity) • Random number generator with seed control • 20+ physical and mathematical constants • SI prefixes • Built-in What's New information for app updates PRIVACY & DATA • Calculation history and graph history are stored locally on your device • No third-party analytics; crash reporting (Firebase Crashlytics) may be used to improve stability — see the Privacy Policy for details FREE AND PRO • The free version of CalcIUM already includes a wide range of scientific, graphing, conversion, and utility tools • PRO unlocks additional advanced tools, graphing capabilities, unit-conversion categories, access to recently used tools, and eight premium themes • PRO is available through a one-time in-app purchase with no subscription • Premium themes can be previewed before purchase • The current license status and available features can be checked on the in-app About screen Need help? Open the built-in Help from the app menu. For support, use the contact email shown in About.