Kern

Kern is a to-do app built for people who already plan with Claude. You speak a task into your phone or say it on your Mac, and the app files it with a title, a space, a section, labels and a date, with Undo if it read you wrong.

Under every open task, Kern writes the next single step and adds buttons such as Track package, Get directions or Open email, and can look things up with sources. One list stays in sync between iPhone and Mac, and it works offline.