The basic mode includes a number pad, buttons for adding, subtracting, multiplying, and dividing, as well as memory keys.

The macOS version of Calculator also has a programmer mode that gives the user access to more options related to computer programming.

[11] In 2022, the Wall Street Journal's Joanna Stern asked Apple marketing chief Greg Joswiak about the lack of a Calculator app, who responded: "There are a ton of them.

"[12][13] A jailbreak tweak named "Belfry" was able to unofficially install the app, along with every other iPhone-only application, on an iPad in early 2012.

[17] They include the standard addition, subtraction, multiplication, and division operations, with exponentiation and the use of the percent sign to denote percentage.