The app emulates the HP-67 RPN programmable calculator. It offers multiple active calculators, full memory visibility, and a paper tape register with various modes.
The app allows users to type calculations line by line like a text editor. Results update instantly as values or formulas change, making calculations visible and structured.
The app trains mental calculation skills for close-up magicians. It cycles through logical phases and allows users to validate conclusions against correct responses.
CALCULATOR provides basic arithmetic with history and memory functions. It includes scientific operations like trigonometry, logarithms, and exponents. Users can customize themes, adjust font sizes, and save frequently used equations.
