Calcuvator

A calm, tactile calculator. Basic, scientific, and graphing modes with live previews, derivatives, integrals, and a soft natural design that's easy on the eyes.

Calcuvator is a calculator that feels good to use — soft, tactile keys, a warm natural palette, and three modes that grow with you.

BASIC Everyday math without the friction. Build long expressions with parentheses, watch the live result preview as you type, then copy it with one tap. Full history, grouped by day — tap any past calculation to reuse it.

ADVANCED A full scientific calculator: trig and inverse trig, hyperbolic functions, logarithms, powers and roots, factorial, absolute value, modulo, π and e. Switch between radians and degrees, keep running totals with memory keys (MC, MR, M+, M−), and pin your most-used functions to a favorites row. Not sure what a function does? Long-press it for a plain-English explanation with an example.

GRAPH Type y = sin(x), x² − 4, or e^x and watch it plot instantly. Pinch to zoom, drag to pan, and plot several functions at once with distinct colors and line styles. Tap a curve to trace it — a floating label shows the exact coordinates, and the insight panel tells you whether the function is increasing or decreasing at that point. Toggle the derivative curve, draw the tangent line, find x-intercepts and local maxima automatically, compute the area under the curve, browse a value table, set a custom range, save favorite graphs, and export beautiful images to share.

DESIGNED TO BE CALM A gentle neumorphic design in warm linen and sage — with a matching night-friendly dark mode — plus subtle haptics that make every key press feel real.

PRIVATE BY DESIGN No accounts, no ads, no analytics, no network access. Your calculations never leave your device.

Smart error messages ("Cannot divide by zero", "Invalid domain for arcsin"), adjustable decimal precision, scientific or decimal result formats, and full support for iPhone and iPad, portrait and landscape.