LumioCalc vs Constructive Calculator

Meet LumioCalc — the calculator that looks as good as it performs. From quick everyday arithmetic to advanced scientific operations, LumioCalc delivers speed, precision, and complete visual control. Choose from a growing collection of handcrafted themes or design your own from scratch with a deeply customizable theme editor. BEAUTIFUL THEMES, BUILT IN Pick from glossy, frosted, seasonal, and curated themes — each with its own color palette, typography, and personality. Explore favorites including Paper & Ink, Cobalt Studio and Lumio, plus the new Halloween-inspired Moonlit Gothic Observatory. MAKE IT YOURS LumioCalc Pro unlocks the full theme editor. Customize every detail: background colors, gradients, and images; button shapes, shadows, and corner radius; per-category colors for digits, operations, functions, memory, and scientific buttons; display, button, and scientific typography; haptic feedback; button sounds (Click, Tick, Pop); and animation styles (Push, Bounce, Glow, Liquid, Spin) with adjustable speed and intensity. POWERFUL CALCULATOR - Standard and scientific modes with one tap to switch - Trigonometric, logarithmic, exponential, and root functions - Radian and degree mode toggle - Memory operations (MC, MR, M+, M-) - Full parentheses and expression support - Scrollable calculation history — tap any result to reuse it - Keyboard input support DESIGNED FOR EVERY SCREEN Portrait and landscape layouts on iPhone. An adaptive iPad layout with a side-by-side scientific panel and history sidebar when you have the space. FREE TO USE, PRO TO PERSONALIZE Every calculator feature and a selection of built-in themes are completely free. Try every LumioCalc Pro feature free for 7 days, including premium themes and the full theme editor. Create custom themes, explore every personalization option, and decide if Pro is for you. When the trial ends, simply continue using LumioCalc for free or unlock Pro with a one-time purchase — no subscription. Buy once and unlock Pro across iPhone, iPad and Mac with the same Apple ID. Whether you are a student, engineer, designer, or just someone who wants a calculator with personality — LumioCalc gives you power and style in one app.

Ordinary calculators round. Constructive Calculator doesn't. It computes with constructive real numbers, an arbitrary-precision engine that keeps every result exact and hands you as many correct digits as you ask for. The rounding errors that quietly accumulate in ordinary calculators simply never happen. AS MANY DIGITS AS YOU WANT A pocket calculator stops at about 15 digits and rounds off the rest. Constructive Calculator keeps every result exact, so the digits a normal calculator throws away are still there. Swipe √2, π, or any answer to pull in tens, hundreds, or thousands more, computed on demand. SCIENTIFIC KEYPAD Trigonometry in degrees or radians and their inverses, exponentials and logarithms, powers and roots, factorials, percentages, the constants π and e, and the standard normal distribution, its CDF Φ and quantile Φ⁻¹, computed to the same arbitrary precision as everything else. BIG INTEGERS, IN FULL 52! (the number of ways to shuffle a deck) prints in full, all 68 of its digits, with no scientific-notation hand-waving. BUILT FOR CLARITY A running tape of recent calculations, locale-aware digit grouping, and copy at whatever precision you need. Constructive Calculator is an independent port of Hans Boehm's constructive-reals calculator, rebuilt natively for iPhone and iPad.