Calculo

The smart calculator that does more! Convert units, get real-time currency rates, define variables, and tackle complex math with ease—all in one app.

The calculator that works like a notepad. Type your math the way you'd jot it in a notebook — with plain words , variables , and units — and every line resolves as you go. Calculo's built-in assistant turns a plain-English question into a working note — so you can see every step and change any number. Calculo lives on iPhone, iPad, and Mac, with iCloud keeping every note in sync.