I've been working on a note-taking tool / daily todo-app: https://crom.ai/ - Currently in closed beta. It uses basic markdown and some additional custom elements to annotate data.

The idea is that you get a daily for every day, with the items ticked off on the last day removed. So a new daily every day. At the same time, there is some integration with AI to get feedback on things to break down. You can give it some instructions, focus, and also tune the amount of feedback.

I've had this in so many incarnations before, but never made it 'properly'. It's a pet project, but do want to release it at some point.

I'm adding people to the beta bit-by-bit.