Mathintosh

A calculator, a tip calculator, and a unit converter in one beautifully themed app. No ads, no tracking, and every feature is free. Mathintosh is a fast, fun, multi-function calculator for iPhone, iPad, iPhone Duo, and Apple Watch, packed with helpful tools, beautiful themes and plenty of ways to make it your own. Four Core Modes • Calculator: fast, easy, and every basic covered. • Scientific: trigonometry, logarithms, powers, factorials, memory and more. • Tip Calculator: pick your percentage, round the total up or down, and split the bill. • Converter: dozens of units across 10 categories, including live currency rates and time zones. Three More Modes • Fraction: separate whole-number, numerator and denominator pads, with step-by-step working. • Pythagoras: enter any two sides of a right triangle to find the third. • Quadrilaterals: solve for any four-sided shape. Made for Every Screen • iPhone Duo: Mathintosh adapts to every pose. Half-open, the display sits above the fold and the keys below; turn it sideways and your paper tape sits alongside. • iPad: big, comfortable keypads with a consistent look in every mode. • Apple Watch: a calculator on your wrist that syncs your theme from iPhone. Make It Yours • 23 themes, from classic terminals to vibrant colors and retro-inspired tech. PDP-11 and Luminosity are free, each with light and dark modes; 21 more come with a one-time purchase. • Choose your fonts, button shapes, and glass, flat or 3D button styles. • The same purchase unlocks 11 alternate app icons. Handy Extras • Paper tape: a clear history of every calculation, ready to review, pin and share. • Send a value from one mode to another with a tap. • Widgets, Control Center controls and Quick Actions. • Built-in support for VoiceOver, Dynamic Type and other accessibility features. Mathintosh is actively developed, and new features arrive regularly.