A private world for two, and nobody else.
Your photographs are lost in a camera roll of nine thousand. The words are somewhere in a chat thread neither of you can scroll back through. The day you met is a fact you both know and can never find. A Hapipy world is one private place that holds all of it — and gives it a shape you can actually visit.
Inside a world
Built to be lived in, not just filled in.
A galaxy of everything you have saved
Every photo, letter and milestone becomes a star with a fixed place, laid out along a spiral in the order it happened. The oldest thing you saved sits at the centre. It is the same sky for both of you, on every device.
Letters that arrive sealed
Write a letter and it waits in an envelope until they open it — wax seal, unfolding paper, the whole moment. Nothing about it feels like a text message, which is the point.
Memories you can seal for later
Lock something behind a date or a password. It appears in the galaxy as a sealed star that the app keeps closed until the day comes — a letter for an anniversary, or for a hard week you know is coming.
A wall for the small things
Notes left where the other one will find them. The things that never fit in a photo album and get lost in a chat thread by Thursday.
A gallery that is only yours
Your photographs in one private place, not scattered through a camera roll of nine thousand.
The days, counted
How long it has been since the day you started, and how long until the next time you are in the same room.
Why it stays private
Private is the feature.
Invite-only
A world is set up for two people. Joining takes your invite code and your world password, and the database refuses anyone who does not have both.
No feed, no followers
Nothing to scroll, nobody to perform for, and no discovery surface through which a stranger could ever find you.
Yours to keep
We do not sell your data, and nothing inside your world is public unless you deliberately share a letter by link.
Getting started
One minute to open it.
- 01
Claim your world
Name it and set the day you started. About twenty seconds.
- 02
Invite your partner
Give them your invite code and world password. That is the whole guest list.
- 03
Put the first star in the sky
A letter, a photograph, or a note for tomorrow morning.
Also in Hapipy
For everyone outside your world.
A world is private by design. When you need to tell everybody else something, these are public by design — and neither needs the other.
Questions
Before you start.
What is a Hapipy world?
A private space shared by the people you invite — usually just the two of you. Everything you put in it — photos, love letters, notes, sealed memories, milestones — lives there and nowhere else, and appears together as a navigable galaxy of stars rather than as separate folders.
Is it really private?
Yes. Joining a world takes its invite code and its password, and our database rules refuse everyone else. There is no public feed, no follower list, and no way to browse into somebody else’s world. The only things that become public are a letter, proposal or invitation you choose to share by link. Hapipy’s administrator has technical access for support and safety; photos are stored at unguessable addresses rather than behind a login. Our Privacy & safety page explains both.
Is it free?
Yes. Hapipy is currently free, with no paid plans, and no card is asked for.
Does it work for long-distance couples?
It is arguably better for them. Letters arrive sealed and wait to be opened, the counter runs to the next time you are in the same room, and you both see the same galaxy no matter which side of the world you open it from.
What is the difference between a world and an invitation?
A world is private and permanent — it is for the two of you. An invitation is a public page you send to everyone else for a wedding, birthday or party. They are separate tools, and you can use either without the other.
Somewhere to put the last ten years.
Free to start. Invite-only. Yours to keep.