Every shared to-do list app for couples syncs. Only some tell you what changed.

Thirty percent of fathers in a survey of 3,000 American parents said that remembering to schedule appointments was shared equally in their household. Ten percent of mothers agreed. They were describing the same houses. A shared to-do list app for couples is supposed to end that argument, and every one of them ends the easy half of it.

Ana Weeks and Leah Ruppanner ran that survey and published it in the Journal of Marriage and Family in December 2024. Nobody is lying here. The jobs both partners believe are shared, they write, are the ones "being done by both mothers and fathers, likely duplicated." The daily thinking work is not shared at all: mothers reported holding 79 percent of it against fathers' 37 percent.

Sync is finished. It was the easy half, and whichever app you install, an item you tick vanishes from your partner's phone a second later, which makes real-time sync a bad reason to choose one over another.

The half that decides it is what your partner is told when a task moves. If you both use iPhones, Apple Reminders is enough, and it is already installed. If you use different phones, Microsoft To Do tells you the most and costs nothing, notifying on six separate kinds of change. Todoist announces a completed task and stays quiet when a new one appears. Google Keep says nothing at all.

One disclosure before the table. We make Kudos, a free to-do app, so several of these compete with us. Kudos has no shared lists and no way to assign a task to another person, so it is not in the comparison below, and a couple who wants one list between them should pick something here instead.

Every price, cap and notification below was read off the app's own pricing page, help centre or store listing on 1 September 2026.

The shared to-do list apps for couples, side by side

Read the third column. It is the one every roundup leaves out, and it is the one you feel on a Wednesday evening when the bins have not gone out.

Microsoft To Do says the most, and charges nothing for it

Microsoft publishes the whole list. Switch on Shared list activity and you are notified when someone joins the list, a task is added, a task is completed, a task is unchecked, a task is deleted, or a task is assigned to you. Nothing else here documents six.

The deletion alert is the interesting one. Most couples eventually have the exchange that begins with "I definitely put it on the list," and this is the only app in the comparison that can settle it while anyone still cares.

Two catches come with it. Those notifications only reach Windows, Android and iOS, so a partner who lives in a browser tab gets none of them, and Microsoft's own note warns that moving an assigned task into a different list strips the assignment off it. You will find that out while tidying. Sharing works between two personal Microsoft accounts, so nobody needs a work login.

On two iPhones, Reminders is already sitting there

Apple's version is narrower and much better placed, because it is installed and your partner is already signed in. Sharing a list takes one tap. After that they can add items, delete items and mark them as completed, and under Manage Shared List there are two switches, Adding Reminders and Completing Reminders, which is the entire notification story.

One line on Apple's page matters more than it looks. "Notifications that you set for your reminders aren't shared with anyone else," it says, which means your 6 p.m. alarm about the plumber rings on your phone and nowhere else. To make an alert reach your partner, the reminder has to be assigned to them, and assignment only becomes available after the list has been shared.

The limit is the usual one. Everyone needs an Apple Account and iOS 13 or later, so a household with an iPhone and a Pixel in it is out before it starts.

The general task managers tell you less than you would expect

Todoist supports the whole arrangement free. Five people per personal project and task assignment are both included on the Beginner plan, which is more than a couple will ever need. Then read what it promises to tell you. Its published list of shared project notifications covers comments, assignments, a task being completed or uncompleted, and people joining or leaving a project, and carries no entry at all for a task being added.

That gap points the wrong way. "Buy a card for your mother" appearing on the list is precisely the event the other person needs to hear about, and Todoist will only speak up once somebody has ticked it off.

TickTick draws its line somewhere else. Any member of a shared list can assign a task and the assignee gets a notification, which is ownership handled properly, and the free plan allows exactly one collaborator per list. One is a cap almost no couple will ever hit. The same help page explains how to turn on Do Not Disturb for a shared list, which tells you that TickTick will otherwise nudge you about work assigned to somebody else.

Check the price yourself before you commit to either. When we compared Todoist and TickTick on 15 August 2026, the App Store listed TickTick Premium at $35.99 a year. The same listing on 1 September 2026 says $49.99.

Any.do answers this differently depending on which of its pages you read

This one needs care, because Any.do wrote one of the articles sitting near the top of Google for this search today.

That post says the free tier "covers everything most families need," including shared lists and task assignment, and puts Premium at "around $3–5/month". Any.do's own help centre answers the same question the other way: if you want more advanced personal tools or "any type of shared collaboration", a paid plan will suit you better. The pricing page agrees with the help centre, answering "I want to share tasks with other users" with the Family plan at $8.33 a month for four members billed annually, or $9.99 monthly. Apple's listing, read the same day, shows Any.do Premium at $9.99 a month alongside nine other Any.do purchases, priced from $2.99 to $59.99.

The Family space is genuinely capable. It runs four shared boards or grocery lists for up to four members with assignment, mentions and per-task chat, and an assigned task is the only kind that reaches a member's My Day view. That is not the problem. The problem is that a couple arriving from the blog post expects this free, and the real answer is somewhere between nothing and roughly a hundred dollars a year depending on which page they landed on. Open the app and look at your own account before planning around it.

Cozi and Google Keep are not really task apps

Cozi is a family calendar that happens to hold lists, and once you read it that way the behaviour makes sense. To-do and shopping lists sync silently to everyone on the account. All of the alerting is calendar-shaped, and Cozi's help pages say plainly that change notifications are part of the Cozi Gold subscription and fire when events are created or edited, not when a list changes. Chores work by generating a separate list for each family member in the mobile apps, which is a real answer to who owns what, just not the one everything else here uses. Gold costs $39 a year and covers the whole household. The free version carries ads.

Google Keep is the quickest to set up and the quietest afterwards. Add a collaborator and the note appears in their app within seconds. Google's own App Store description puts it more accurately than any review has: share your shopping list and "watch as items get checked off in real time." Watching means having it open. There is one genuine hazard here too, which Google's help page states without dwelling on it: delete a shared note you own and it is deleted for everyone.

Assignment is what stops the job being done twice

Weeks and Ruppanner found the duplication hiding inside the tasks both people believed were shared. A list can make that worse before it makes it better, because an item sitting there with nobody's name on it reads as claimed to one of you and as unclaimed to the other.

The setting that earns its keep, then, is the one that puts a face beside the item. Every app above does it except Google Keep, and Cozi does it by splitting the list into one per person. Assigning takes about four seconds.

What none of them can do is decide. Naming who owns the plumber call is still a conversation between two adults, and the app only writes down the outcome, which is why an accountability arrangement works when it is specific and dissolves when it is vague. Settle the ownership first. Notifications exist to stop the same job being started twice, not to hold the conversation that decides whose job it was.

What to install tonight

Two iPhones, and you want this working in a minute: install nothing and share a list in Apple Reminders. If your phones are different, Microsoft To Do is free and the most talkative app in this comparison by a distance. If you already run your week in Todoist or TickTick, share a list there rather than installing a ninth app, and remember that Todoist will not announce anything new.

If you want something shaped like a couple rather than a project team, Honeydo Tasks is built for exactly two people and says it will tell you the moment your partner adds something or checks a task off. Honeydo+ costs $0.99 a month or $9.99 a year and one subscription covers you both, which makes it easily the cheapest paid option here. The free version shows ads.

Pick Cozi if the calendar is the real problem and the lists are a bonus. Pick Google Keep if you want a grocery list and truly nothing else. Whichever you choose, turn the notifications on while you are setting it up, because every app here ships with some of them switched off.