Comment by evanjrowley

>"A calculator app? Anyone could make that"[0]

Shameless plug: my favorite calculator "app" is wxMaxima. It uses similar techniques[1] as those described in the fantastic article at the top of this 2025 list. Implemented in Lisp[2].

[0] https://chadnauseam.com/coding/random/calculator-app

[1] https://feb.kuleuven.be/public/u0003131/WBT23/wxMaxima/wxM_i...

[2] https://maxima.sourceforge.io/lisp.html