[natbennett]

Not technically a Tracker clone (we don't have points or all of its states) but we're in the neighborhood -- at StoryTime we've been writing about the development process monthly if any of ya'll are curious about what takes the most time in this domain.

https://buttondown.com/storytime-team/archive/

Tracker's basics are pretty simple but getting the details right takes some finesse. Its multi-user update model is deceptively sophisticated -- being very responsive without ever losing data is a bit tricky, and you're probably making some tradeoffs you'd rather not make. The drag-and-drop behavior also took us a while to get exactly how we wanted it.