Sindre Sorhus refuses to abandon users who can’t run the latest macOS. Every year he publishes the last-compatible build of each of his paid apps — Dato, Lungo, Battery Indicator, and a dozen others — free to download for anyone on macOS 15 or earlier, going back to 10.13. The page is a quiet annual gesture from one of the Mac’s most prolific indie devs that turns “I refuse to upgrade” from a problem into a non-issue.