Your whole party,
in one spot.
Design the invitation, send it on WhatsApp, and keep replies, the guest list and last-minute updates together.
Free to design and preview. Introductory launch price €0.99 per event, unlimited guests.
Join us to celebrate
Inês's Birthday
9
Wednesday, 2 December 2026
15:00 – 18:00
Casa da Avó
You're invited
Sofia's Birthday
40
Wednesday, 30 December 2026
20:00 – 18:00
Quinta do Lago
Join us to celebrate
Leo's Birthday
6
Tuesday, 15 December 2026
15:00 – 18:00
Planetário de Lisboa
Design. Share. Organize. Manage.
Everything after "let's have a party" lives here.
Pick a look
Choose an illustrated theme or upload your own art — we match the colours.
Send it
One link for the class group or one per family, straight into WhatsApp. Nothing to install.
Count heads
Guests reply with each child's name. Children and adults counted separately.
Handle it
Answer questions, change the details and keep every reply where you can see it.
For every kind of yay!
Birthdays, baby showers, baptisms, dinners, weddings, game nights and movie nights. See all themes →
Football
Golden toast
Dinosaurs
Little one
Pool party
Dinner party
Surf
Celebration
Cars & monster trucks
Movie night
Botanical
Skate
Under the stars
Roller disco & hip hop
Game night
Then run the party from here.
Publishing is the start. Your event page holds the rest:
Headcount as it happens
Children, adults and households tallied while replies arrive.
Private questions
Guests ask from the invitation; only you see the thread.
Plans can move
Change the time, place or practical info without re-sending anything.
What hosts are saying.
People who've already run their parties with yaydayz.
I don't host a single dinner anymore without using yaydayz first. Creating an event is super quick, and then the best part: managing guests and sending updates about the event is really easy! Finally a fix for messages lost in WhatsApp.
It's really practical, simple and quick. My kids' birthday parties are all run through yaydayz — every parent gets an email when I make changes, and I can manage the guests easily. Love it!
I've been creating all my events through yaydayz! Dinner parties, kids' bdays and even my NYE party is being organized here! I just love it, so easy and fast to do everything and making sure everyone is notified, me included! I highly recommend it!