[rsanek]

Replacing the "due card" count with a graph that visually shows the memory decay is brilliant. What I imagine being especially nice about this UI too is that it would do a much better job of adjusting to how much of your content is new vs. mature -- that is, your graph decays quite quickly if you are learning a bunch of new stuff recently, but decays more slowly if you haven't added anything new in a few weeks and just took a few days off. In Anki, both of these cases appear the same since you're just looking at a raw due count.

Some of the "Explore" examples look to be broken for me, even if I try to go to CodePen directly. For example, the card "a binary operator requires.." does not seem to have anything in the CodePen.

My own workflow is too locked into the Anki app itself but this is a great project, well done!