I was in a similar situation like you. Nothing seemed to fit and I wrote one myself without a login.
Then I noticed, that it would be nice if my wife had access, too, but that required at least multiple lists.
Then I noticed, that it would be better, if there were lists for her, lists for me and also shared ones (like grocery), but that required some kind of authentication.
I chose QR-Codes / login tokens to solve this and it works pretty good. Seems like it has no login (due to locally stored tokens), but it can at least identify a user.
So, I still think my list[1] is better than others for MY personal purpose, but it is still very incomplete. Maybe it fulfils your needs...?!
I like the QRCode idea. For lalacheck if the list is private I don't share, if the list is to someone I share it. But makes sense the collection of lists or tasks.
I was in a similar situation like you. Nothing seemed to fit and I wrote one myself without a login.
Then I noticed, that it would be nice if my wife had access, too, but that required at least multiple lists.
Then I noticed, that it would be better, if there were lists for her, lists for me and also shared ones (like grocery), but that required some kind of authentication.
I chose QR-Codes / login tokens to solve this and it works pretty good. Seems like it has no login (due to locally stored tokens), but it can at least identify a user.
So, I still think my list[1] is better than others for MY personal purpose, but it is still very incomplete. Maybe it fulfils your needs...?!
1: https://github.com/sandreas/pure-todo