DuckDoro · Memento Mori
Nothing is sent anywhere. The maths happens in this browser tab.
One square is one week. The pale one is the week you are in now.
Saving it also gets you the shareable card, and puts the grid next to the three things you actually plan to do today.
Memento mori is Latin for "remember you must die". It ran through Stoic practice for centuries: Marcus Aurelius wrote versions of it to himself in the private notebook we now call Meditations, and Seneca built an entire essay, On the Shortness of Life, around the same observation — that we act as though time were unlimited and then complain that there was never enough of it.
The aim was never gloom. It was to stop drifting. A life with an edge makes a short list of priorities obvious, and makes the difference between what you are doing and what you meant to do much harder to ignore.
Eighty years is roughly four thousand weeks. Oliver Burkeman took that number for the title of his book because it is small enough to actually picture — unlike "a lifetime", which the mind treats as effectively infinite. Once you can picture it, the conclusion is not "go faster". It is that you cannot fit everything in, so choosing becomes the real skill.
Most life-in-weeks grids draw a full eighty or ninety years and black out the weeks you have already spent. It makes a striking image and a fairly grim one, and it quietly asserts a date nobody knows. This calculator draws only the weeks you have actually lived, and marks the one you are in. Same idea, no fortune telling — and it ends by pointing at today rather than at an ending.
The honest use is small: let it shorten today's list. DuckDoro is built on that one move — three intents a day, one of them the hardest, everything else captured for later. If the grid makes the case, the app is the habit that follows from it.