The shared to-do list a couple actually uses

Almost every couple has tried a shared list. Almost every one abandoned it within a month. The reason is always the same, even if nobody says it: the list became the place where one of you writes what they'd like the other to do. And nobody willingly opens an app that assigns them work.

A shared list that works has different rules from a personal one. These are the five that matter.

Rule 1: you assign only to yourself (almost)

The most counter-intuitive rule. In a couple's list, each puts in their own column the things they've taken on. Assigning something to the other is allowed only if it was agreed out loud first.

It sounds limiting. In practice it turns the list from a pressure tool into a transparency tool: I see what my partner has taken on, he sees what I've taken on, and neither of us finds new tasks in the morning.

In KidBox every item in the to-do lists has an assignee: the list filters to "mine" in one tap, and the other person's stay visible without being intrusive.

Rule 2: one list for the home, one each

Three lists, not one and not ten:

• Home: things about the family (call the plumber, renew the insurance, buy the gift)
• Mine and Theirs: personal things the other doesn't have to see, but that help to see (so they know why you're busy on Thursday)

The Home list is where rule 1 applies. The personal lists are free.

Rule 3: a due date is mandatory, a time isn't

A to-do without a date is a wish. "Call the plumber" with no deadline will stay on the list forever. "Call the plumber — by Friday" has a real chance of happening.

A time, though, no: putting "at 3pm" on everything turns the list into a calendar, and things not done by 3pm become failures. The deadline is the day; the time is only for the reminder, when needed.

Rule 4: empty it on Sunday

Lists die by accumulation. After three weeks there are forty items, thirty no longer relevant, and nobody opens it any more because it's depressing.

Ten minutes on Sunday, together: delete what's no longer needed, reschedule what's overdue, add what came in during the week. It's the same moment you look at next week's calendar — the two tools talk to each other.

Rule 5: the list isn't the chat

"I did the laundry" isn't a list item, it's a message. "Remember your mother's coming tomorrow" isn't a list item, it's a message. Putting communication in the list clogs it; putting tasks in chat loses them.

So: tasks in the list, communication in chat, fixed information (the plumber's number) in a note. Three places, three functions, and everyone knows where to look.

What actually goes in the Home list

Not recurring chores — those are routine, not tasks — but the one-off things with a deadline:

• Calls to make (doctor, school, support)
• Non-food purchases (gift, shoes for the little one, light bulb)
• Paperwork (renewal, enrolment, cancellation)
• Small jobs (put up the shelf, take the car to the mechanic)
• Things to decide together ("choose the summer camp")

The last category is the most useful and the most forgotten: a decision to make is a task like any other, and without a deadline it never gets made.

By voice, when hands are busy

The to-do almost always comes up at a moment when you can't write. "Alexa, ask KidBox to remind me to call the school" puts it on the list while driving or cooking. We cover it in the article on Alexa.

The sign it's working

After a month, the Home list is alive if it has items from both of you, deadlines met more than missed, and neither of you feels ordered around. If instead one person writes and the other executes — or ignores — go back to rule 1. That's almost always where the problem is.