I'm usually next to a computer when I need those sorts of results. The calculator keyboard button is mapped to a wrapper around a python repl with a bunch of tools pre-imported, and that's generally faster and easier than a calculator would have been.

In the field though, phone calculators are still kind of bad. They're a nice blend of being clunky to do anything fancy while simultaneously not supporting almost any features. If anyone has any recommendations for better apps I'm all ears, but if I were doing stuff away from my desk more often I'd want a real calculator.