There is definitely something to be said for simple file formats augmented with tooling like LLMs and such. I am one of the people who also ended up writing my

There is definitely something to be said for simple file formats augmented with tooling like LLMs and such. I am one of the people who also ended up writing my own todo list app. It really started as a journaling system, but it was super simple to add TODOs. I basically created my own clone of Logseq if anyone is familiar with that. I've basically got what the author has got, but I've automated the part where a fresh page is created each day, and a feature to quickly move undone TODOs to any day.