The arrangement is settled. Alternating weeks, changeover Monday morning, and it has worked since March.

It is Thursday night and you are texting about the school bag again. Whose week has the long weekend in it. Whether the dentist falls on your Tuesday or theirs. Nobody is being difficult. The pattern lives in two heads and a PDF, and neither of those is a calendar.

So you go looking for a co-parenting calendar app, and the first page of results hands you five products designed to be read out in court.

A co-parenting calendar app is two different products

This is the thing that makes the whole category confusing, and once you see it the shopping gets easy.

The first job is the joint record. A schedule both parents agreed, messages neither can edit afterwards, receipts for the school shoes, and an export a lawyer can open. It is built for the case where trust has run out, and it is the only job the top results sell, because those are the customers who arrive under pressure and pay a subscription each.

The second job is your own fortnight. Which nights the children are with you, who is doing the changeover on the week you are at work until seven, what has to be in the bag, when the dentist is, and whether your partner knows any of it. That job has nothing to do with the other house and everything to do with the four people standing in your kitchen.

The joint record is a document. Your fortnight is a week that has to actually happen.

A court-facing app is a poor place for the second job, and not because it is badly made. It is shared with somebody who is not in your household, so the more of your life you put in it, the more of your life they can read.

Chirpy does the second job. A Chirpy household is one home, one calendar, and the other parent is not in it. That is a deliberate boundary, and it is the reason the rest of this guide works.

The half nobody sells you: the nights have to land in your own week

Here is what the second job looks like when it is done, and it takes about four minutes.

Say your pattern is alternating weeks with a Monday exchange. In Chirpy you add one entry, “Ivy to her dad’s”, on Monday at 8am, and set it to repeat every two weeks. Then a second, “Ivy home”, on the Monday after, same repeat. Tick “Remind everyone it’s for” and both of them warn a month out, a week out, the night before and two hours ahead.

That is the whole setup. Two entries, and the fortnight is now on a calendar that everyone in your house opens, wearing the colour of the person it belongs to. Your partner can see that next week is a your-week before booking anything. The grandparent doing Wednesday pickup can see it too, because they are in the household rather than cc’d on it. Six people on Basic, each with their own sign-in, free, no card.

Nothing about that is clever. It is just the half of the problem that the court-record products cannot touch, and it is the half you live in every day.

If you are doing this with a new partner rather than alone, the mechanics of share calendar with partner are worth reading alongside this, because the permission traps there are the same ones.

Alternating weeks, 2-2-3, every other weekend: what you actually type

Custody patterns get discussed in nights. They get entered in changeovers, and the two numbers are different.

Every common pattern runs on a fourteen-day cycle. Alternating weeks, 2-2-3, 3-4-4-3, every other weekend: all of them come back round on day fifteen, which is why a weekly repeat cannot hold one. The repeat you want is every two weeks, and Chirpy has exactly that in the repeat list, with an “until” date if the arrangement has an end in sight.

Then count the changeovers in one cycle. That number is how many entries you make, and the diagram above has it for the three most common patterns.

1. Alternating weeks: two entries. One out, one back, both repeating fortnightly.
2. 2-2-3: six entries. Seven nights of fourteen, same as alternating weeks, and three times the typing, because the house changes six times.
3. Every other weekend: two entries. Friday out, Sunday back.
4. Set the first one on a real date from the pattern. The fortnightly repeat counts from whatever day you put it on, so pick a changeover that has already happened and work forward.

One mechanic to know before you start, because it changes how you handle swaps. Editing a repeating entry in Chirpy edits the whole series; single occurrences cannot be changed on their own yet. So when you swap a weekend, leave the pattern standing and add the swap as its own dated entry, named for what changed: “Swap: Ivy here Sat instead”. The pattern stays true and the exception is visible, which is also how you want it if anybody asks in three months what happened that weekend.

Once the fortnight is in, the rest of the week can sit on top of it. That is the same job as a weekly family schedule template, with the difference that the shape underneath yours changes every seven days.

The changeover is a packing list with a deadline

Ask any co-parent what actually goes wrong and almost nobody says the schedule. They say the inhaler.

The reading folder that stayed on your table. The football boots at the other house on the morning of a match. The charger, the coat, the library book due Friday. The pattern is the easy part, and the kit is what turns a calm Monday into two phone calls.

So give the bag a list of its own and stop carrying it in your head. Chirpy’s Lists tool holds ten custom lists on the free plan, and a to-do can carry a due date and one person’s name. A job with a name on it nags only that person, at thirty days, seven days, the evening before and the morning of, which for a changeover means the person carrying the bag gets told the night before and nobody else gets a notification they cannot act on.

• Two lists, not one. What goes with them, and what should come back. The second one is the list everybody forgets to make.
• Put the medicine at the top and name it. Inhaler, dose, and where it lives. This is the item that ends up in a phone call.
• Assign the changeover, do not announce it. The adult doing the driving is the one who needs the reminder.

If your children move between houses with kit for three activities, the sorting problem is the one in family packing list app, applied fortnightly instead of once a summer.

What a co-parenting calendar app costs in 2026

Two things have changed in this category recently, and most of the listicles ranking for this query have not caught up with either.

The first is that the free purpose-built app has more or less gone. The second is that these products are priced per parent, so the sticker price is roughly half of what the arrangement costs between you. Every figure below was read on the company’s own site on 26 September 2026.

Read the last two columns like with like and the shape of the market is clear. Free against free, only Chirpy has one, and it holds the fortnight, the changeover reminders, the kit lists and twelve other tools for a household of six. Top tier against top tier, OurFamilyWizard Max is $22.99 a month for one parent on the annual plan, so roughly $550 a year between the two of you, while Chirpy Pro is $12.99 a month or $89 a year for the entire house.

Those numbers are not really competing, which is the point. One of them is buying evidence and the other is buying a week that runs.

One thing OurFamilyWizard does that we cannot: its record is built to be read by a judge, it sells certified printed copies, and it gives your lawyer or therapist a free professional account to look at the account activity themselves. If your changeovers are contested, that is the product and no household planner substitutes for it. What it will not do is tell your partner that Thursday is a school-bag night, or put the dentist in front of the person doing the driving, and that is the part that comes up fifty times a fortnight rather than once in a hearing.

Two details on OurFamilyWizard worth knowing before you sign up

Their own pricing page states it plainly: “You and your co-parent will each have your own accounts”, and “You will each need to have your own subscriptions, but you are able to pay for your co-parent if you would like.” So the annual figure in the table is one side of the arrangement.

The same page is worth reading for two free things, if a court has told you to use it: child, extended family and caretaker accounts come with limited access at no cost, and so do the accounts for your legal or mental health professionals. Neither of those covers the adults in your own kitchen, which is the gap Chirpy Basic fills for nothing.

The dates that have to reach both houses

Some dates are not yours or theirs. The dentist, the vaccination, the parents’ evening, the first day of a new term: whoever has that Tuesday has to be the one who knows.

Those are the entries worth putting in properly, not leaving in a text thread. In Chirpy they go on the household calendar with the reminder ladder switched on, which means a month out, a week out, the night before and two hours ahead to everyone the appointment is for. A month is the useful rung. It is the last point at which a clash with the pattern can still be swapped by asking nicely.

The school term calendar is the fiddly one, because it arrives as a PDF in August with eleven dates in it. Typing those eleven in is free and takes ten minutes. On Pro, at $12.99 a month or $89 a year, you can say “parents evening Thursday half six” and it lands on the calendar, or forward the school’s email and let the sweep propose the dates for you to accept. That is the same machinery behind school dates into family calendar, and the free plan reaches the same finished calendar by typing.

Activities are the other recurring trap, because clubs run weekly and your pattern runs fortnightly, so half of every season lands on a week the children are not with you. Putting both on one grid is the only way to see it coming, and it is the whole job in manage kids activities schedule.

What does not belong in the app you share with the other parent

A joint co-parenting app is a record, and a record is read. That is its entire value and it is also the reason to be deliberate about what goes in it.

Your own diary does not belong there. Neither do your partner’s shifts, your money, the holiday you are pricing up, or the notes you keep about how a week went. Put the children’s schedule, the agreed changes and the shared costs in the joint app. Keep the rest in your own house’s calendar, which is what Chirpy is for.

Inside your own household there is still a privacy question, and it has a quieter answer than most shared calendars manage. Chirpy has a “Just busy” block: it draws a shaded band on the grid so everybody can see you are unavailable, and nobody sees what it is. A busy block never sends a reminder either, which is the behaviour you want from something whose only job is to say when.

That is usually enough for the thing people actually want from a family calendar, which is to be visible without being open. The same problem, from the other end, is what makes a family calendar nobody uses it go quiet in six weeks.

Common questions