I think the argument is that there are still unexplored Todo app models out there. For me, I think the ideal Todo app is probably a WhatsApp-style interface with one or more AI personalities helping me achieve one or more goals e.g. a side project partner, a gym buddy, etc.

Bingo. The ultimate 'todo app' will be when everyone has an AI assistant. "You mentioned in the meeting last week you would respond to Bill by Tuesday, and you have not done that yet. Here is a suggested response to get you started."

There used to be a meme about "have your people call my people and ..."[0]

The new one will be "have your AI call my AI and ..."

[0] https://essaywriteronline.co/what-does-have-your-people-call...

ChatGPT meets Clippy... What would be even more useful is if that AI could receive unspoken queues/feedback and it "understood" human behavior. Sometimes it's just not a good time for an assistant to cut in and remind you of something.

I want to ask an AI questions like "I have 30 minutes of free time at home, what tasks can I complete?" and it'd give a relevant answer taking into account the weather and time of day automatically.

So that it wouldn't suggest yard work during a lightning storm or drilling at midnight. =)

I'd actually pay a monthly subscription to a service like that, especially if it could ingest my personal data (calendar, email, todo-lists) securely.

Ha, I'm obsessively experimenting on myself with that these months! Like everyone else, I imagine.

It's really quite effective, and I find that much of the problem (aside from cost!) is uncomfortably stripped down to just UX.

Which is fun, but not what I signed up for when I got obsessed about this whole thing...

Not sure if it's still popular now, but I've seen many write todo lists to themselves in WhatsApp and delete messages as they complete items.

Kind of clunky but if a proper chat + todo + llm hybrid was made, then that would be something worth exploring.