[tcmb]

I really like it, and it's funny because I had just started using a very similar system a few weeks ago. I was using Trello with eight lists (Mon thru Sun and a 'backlog') as a sort of proof of concept.

One 'feature' I was using myself was a 'rolling week': The leftmost column is always today [1]. At the end of the day, I'd make a point of clearing out all items that were not checked off: They either move to one of the upcoming days or back into the backlog. At first I thought I would want some automatic behavior, like always moving unchecked items to the next day, but it's actually become a useful end-of-day ritual for me to see what I did not do, whether it is still important and if and when I want to do it. Then, when everything out of 'today' is either checked off or moved elsewhere, the day moves to the end of the rolling week, so that on each day of the week I always have a visible window of seven days.

Another feature I started using regularly was the 'copy' functionality that Trello has built in: it's just practical to be able to quickly duplicate items and in the process define into which day they should go.

[1] Actually the second col from the left, because I had the backlog as the leftmost one

Edit: I should clarify that I wasn't using this as a _calendar_ but rather as a Todo app/list. I'm still using macOS' regular calendar app for everything that is more than 7 days out.