Shoutout to the Soulver team (great Mac/iOS app!) for making their math engine freely available for personal projects: https://github.com/soulverteam/SoulverCore I wrote myself a little script to make it available in Alfred. Impressed that the parser understands this to compute the difference between two dates: "2025-11-24 - 2025-06-15 in days" (the "c" is my shortcut for "calculate").