A meditation habit tracker isn't solving the problem people think it's solving. Once you're sitting there with your eyes closed, meditation more or less runs itself (even a bad session still counts as a session). The actual failure point comes earlier — it's the ten seconds where you're supposed to stop what you're doing and sit down, and something else feels more urgent. That's a trigger problem, not a discipline problem, which is good news because triggers are fixable.
This tracker leans on that: set an anchor like "after I make coffee, I meditate for a few minutes" so the existing habit does the reminding for you, then just tick yes or no for the day (no minutes logged, no unbroken streak to protect — just a rate you can watch move). Three minutes counts the same as thirty here, on purpose, because the point is building the sitting-down habit first; length is something you can be fussy about later, once showing up isn't in question. Miss a day and that's not much to worry about in practice; miss two in a row and that's usually the real warning sign, worth noticing before it becomes a month. Just try it: pick your anchor, set meditation as one of your three free habits, and see what your rate looks like after a week.