How do you keep family planning from becoming one person’s job?

We launched Shareday today as a shared family planner, and this is the core question behind the product for us.

In many families, planning quietly becomes one person's invisible job: one parent remembers the schedule, keeps the shopping list in their head, reminds everyone about birthdays, and notices when someone is having a rough week.

We are trying to make that work visible and shared with a family calendar, tasks, shopping lists, birthday planning, chat, mood check-ins, and recipes that can turn into events and shopping lists.

I would love to hear from other makers and parents here:

What makes family planning actually collaborative in your home?

Is it shared calendars, better task ownership, reminders, chat, emotional check-ins, or something else entirely?