Make one

  • Group calendar
  • Crowd calendar
  • Personal calendar
  • Business calendar

Help

  • How it works
  • About us
  • Help and FAQs
  • Contact us
  • Advent Street

The small print

  • Privacy
  • Terms
  • Refunds
  • Report a calendar

No ads in your calendar. Ever.

Made in the UK. Prices include VAT where applicable.

Door 1 opens on 1 December. Start now and everyone has time to dig out the good photos.

The Knock Knock Club
PricesSample CalendarAbout us
Sign in
Start a calendar

This Christmas, everyone brings a door.

The best bits of us, one door at a time.

Go on, open one.

Our years at university

Example

PSAJT+3Priya, Sam, Alex and 5 others are behind these doors. Ten years of friendship, one door at a time.

Start a group calendar

£14.99 for up to 24 people. No app, no accounts.

Remember the photos, the in-jokes, the stories only your people understand? Make an advent calendar together. Everyone secretly adds a few surprises, then from 1 December you all open the same door each morning. A little bit of us, every day until Christmas.

Three little steps. A whole lot of us.

  1. 1

    Get the gang back together

    Send one link to the family chat, the old uni lot or the mates you keep meaning to see. Up to 24 people can join with just a first name. No app. No account. No organising a date everyone can make.

  2. 2

    Let the memories come out

    We share out the doors. Everyone adds theirs in secret: the forgotten photo, the ridiculous voice note, the story that still makes you laugh. You won’t see their surprises. They won’t see yours.

  3. 3

    Make every morning a reunion

    From 1 December, one door opens for everyone each day. See who sent it, relive the moment and join the replies. Same people, new Christmas tradition.

Even the forgetful friend brings something to the party.

Every group has one. The friend who says “I’ll do it tonight” and remembers three days later. Don’t worry. If someone misses their door’s deadline, it becomes a question for everyone instead. “What was our funniest night together?” One question, a flood of memories. Not a single empty door.

Lisbon. The taxi ride alone deserves a door.
Maya
That fire alarm at 3am. Still not over it.
Tom
Karaoke night. And no, I’m not apologising.
Leah

Different people. Different kinds of magic.

Group calendar

For the people who know all your stories.

The friends from uni. Your cousins. The old team. The people who can make you laugh with one word. Invite up to 24 of them to hide your favourite moments behind 24 doors, then discover a new surprise together every morning.

  • Uni friends
  • Family chat
  • Workmates
  • Five-a-side

£14.99

for the whole group. Everyone else joins free.

Start a group calendar

Crowd calendar

For the people who always have something to say.

Give your followers one question and 24 doors to claim. They answer however they like. You open one surprise a day. Their answers? Well, you’ve only yourself to blame for asking.

  • “Roast me in one sentence”
  • “What did you think of me when we first met?”
  • “What’s your most controversial Christmas opinion?”

£14.99

Start a crowd calendar

One very special person in mind?Give them 24 mornings of “I remember that” and “You thought of me”. Fill every door yourself, just for them.Make a personal calendar

Got a business people love?Give your customers a little reason to pop back each day in December. Your own branded advent calendar, made for them.See business calendars

One little door. And suddenly, everyone’s talking again.

Imagine it: a December morning, and the old group chat lights up. Someone’s dug out that photo. Someone else remembers the bits everyone conveniently forgot. By breakfast there’s laughter, a few heart emojis and at least one “Please tell me you’ve deleted the others.” Tomorrow? Another door. By Christmas Eve, you’ve made a scrapbook full of the people and moments worth keeping.

Our years at university

Door 7 is open.

SFromSam

We burnt the curry, nearly missed the exam and somehow made friends for life. Here’s to us.

  • ❤️6love
  • 😂4laughing
  • 🥹3moved
  • 🎉2party
  • 👏2applause
That curry could have stripped paint.
Priya
Wouldn’t change a thing. Well, maybe the curry.
Dev

Every group has a story worth opening.

The ones who’ve known you forever. The ones you only see on a screen. The ones who feel like home. Whoever your “us” is, bring them along.

  • Uni friends Example

    Our years at university

    Proof that we really did go out dressed like that

  • Family Example

    The Smith family’s year

    That Christmas when Grandad told the same joke five times

  • Work team Example

    Team 2026

    The meeting that became an accidental comedy show

  • Sports club Example

    The 2026 season

    The goal we’ll still be arguing about in ten years

  • Friends far apart Example

    Leeds, Lisbon and Sydney

    Same old table, three different cities. Who’s ordering first?

  • Creator (crowd) Example

    Roast me in one sentence

    Twenty-four people. Absolutely no restraint.

It’s not the calendar you’ll remember. It’s who was behind the doors.

Everyone’s part of it.
Up to 24 people add their own little piece of the story. Nobody has to create the whole thing alone.
Not a door left empty.
If someone forgets, the door becomes a question the whole group can answer instead.
Simple enough for the family chat.
Share a link. No app or account to set up. Yes, even Nan can join.
Just your people, no interruptions.
No adverts or sponsored doors in your group calendar. Ever.

A little Christmas magic. One simple price.

Start the calendar once. Invite your people for free. Everyone gets the joy of opening it together.

Calendar prices, including VAT
Group calendarUp to 24 people; one organiser pays, everyone else joins freeUp to 24 people; one organiser pays, everyone else joins free£14.99
Crowd calendarOne question, 24 doors for your followers to claimOne question, 24 doors for your followers to claim£14.99
Personal calendar24 surprises made for one special person24 surprises made for one special person£6.99

One price for the season, whenever you buy. You can start until 20 December, 11:59pm UK time. If you start late, doors run from your start day to Christmas Eve.

See all prices

A few things you might be wondering

What if someone forgets to fill their door?
We send gentle reminders, so nobody has to chase the group chat. If a door still isn’t ready, it turns into a question everyone can answer. A missed deadline never means an empty surprise.
Does everyone need to download an app or make an account?
Neither. Send the link, and your people join with their first name. They can fill and open doors in a browser on their phone or computer.
What can we hide behind the doors?
Old photos, new photos, messages, voice notes, videos up to 120 seconds or little “Redeem for…” treats. Anything that will make your people laugh, smile or say, “I remember that.”
Will I know what everyone has added?
Not even if you’re the organiser. You’ll see who’s filled their doors, but not what’s inside. You get your surprises with everyone else.
We’re scattered across different countries. Can we still do it?
Absolutely. The organiser chooses one time zone for the group, so the same door opens at the same moment for everyone. Miles apart, but opening the same little surprise.
Have we missed 1 December? Is it too late?
You can start a calendar until 20 December, 11:59pm UK time. You’ll get a door a day from your start date to 24 December, at the same price. We’ll show you how many doors that means before you pay.
Are our memories private?
Yes. Your group calendar is private by default. Only the person who made a door can choose to make it public, and they can make it private again at any time.
Can younger family members join?
Group members need to be 13 or over. Adults can add family photos or videos that include younger children, with appropriate permission and care.
What if I want to make one just for Mum, my partner or a friend?
That’s what the personal calendar is for. Fill 24 doors yourself and send one lovely surprise a day to someone you love. It’s £6.99.

You know exactly who you’d invite.

The friend with the embarrassing photos. The cousin who never misses a joke. The people you wish you saw more often. Bring them together for 24 mornings of memories, surprises and that lovely feeling of being us again. Everyone brings a door.

Start a group calendar
£14.99 for the whole group, up to 24 peopleStart a group calendar