Navigation without landmarks. Figure out where you are by knowing where you started and how far you've drifted.
Dead reckoning is how sailors navigated before GPS: you know your last confirmed position, your speed, your heading, and elapsed time. From those, you estimate where you are now.
This tool does the same thing for everything else — projects, decisions, creative work, life situations. You tell it your last known position and where you're trying to go. It calculates a heading and notes the drift.