The Eisenhower matrix is one of those ideas that's more useful than it sounds: sort tasks by urgent-versus-important, and suddenly you can see that half your day goes on things that feel urgent but don't actually matter. The insight isn't the grid — it's noticing how much "urgent but not important" eats your week.
You don't need a fancy four-quadrant app to use it, though — you need somewhere to park tasks and the honesty to sort them. This to-do tool keeps it simple (Today / This Week / Someday), which is the matrix in plain clothes: what's important-and-now versus what can wait or go. Just try it — dump your tasks in and sort them by what actually matters, not just what's shouting loudest.