ChristmaxX: Advent Calendar

Christmas is wonderful – the weeks before it, not always. Who's buying what for whom? Who's spending which day where? Who's bringing the potato salad? Christmax puts it all in one place and shares it with your family – even across several households.

THE FAMILY ADVENT CALENDAR • Everyone fills doors for each other: each person fills 24 and opens one every day – from everyone in turn • Sayings, photos, a picture you paint in the app, a voucher, a riddle, a treasure hunt, a song you sing yourself, "What I love about you" or "On this day … years ago" • Location doors: they only open when you're at the agreed place • Each door only opens on its day • Reply with a heart, a few words or a voice message

GIFTS AT A GLANCE • Collect ideas for everyone, with price and a link to the shop • Budget per person and overall • Idea, bought, wrapped, given – with one tap • The more is wrapped, the brighter the string of lights glows • Stays on your device – nobody in the family sees your gift list

HOLIDAYS THAT WORK FOR EVERYONE • Plans for Christmas Eve, Christmas Day and New Year's Eve – across several families • Only the people involved see a plan • Christmax warns you if a child is meant to be in two places at once • "Sorry, we can't make it" with one tap • A plan for each person – kids see at a glance where they'll be and when • Add everything to your calendar

THE CHRISTMAS DINNER • A menu for each get-together, with your guests' allergies and diets • Who's bringing what – visible to everyone involved • One shopping list from all the dishes • Import a recipe from screenshots or a photo of your cookbook • Cooking plan in reverse: dinner at 6 pm? Christmax tells you when the turkey goes in and reminds you

DISCOVER • Christmas markets, concerts, ice rinks, days out, churches and Christmas trees on one map • Times and prices for Berlin and Brandenburg, Germany – elsewhere via map search • Add to your plans with one tap, or save a place for a location door

A FAMILY WITHOUT AN ACCOUNT • Start a family and invite others by QR code, link or three Christmas pictures read out over the phone • No sign-up, no email address

YOUR FAMILY'S DATA STAYS IN THE FAMILY Everything you share in your family is end-to-end encrypted and stored on a server in Germany. We can't read it. Advent doors are deleted on February 1. No ads, no tracking.

Made by Rico Großmann in Brandenburg, Germany – built and tested with his own family.