What they are

Why they exist

Each one is a paper cut I felt more than twice. The old calculus said paper cuts aren’t worth an app: you’d spend a weekend on menu-bar plumbing alone. When AI writes the plumbing, the calculus flips: any recurring annoyance is now buildable in an evening. These four are what that flip looks like in practice.

What I learned

The interesting thing isn’t any single tool. It’s that “too small to build” is a dying category. Personal software is becoming like personal notes: you just make them.