A living map.

Leave a mark where you are. It lives two hours, then it fades.

Alone it goes out. Whoever passes can keep it lit.

The mark

An emoji set down where you are. It starts with two hours, and waits for whoever passes.

Open it, and the city is already lit: marks left moments ago, each with its time running.

Choose an emoji and set it down where you are. Two hours, on the map, for whoever comes by.

Before it fades, whoever is near can give it time. The map lives on that.

It is not yesterday's map: it is the city right now.

Every mark follows the same arc.

You set your mark down. It is born with two hours ahead.

It lives quietly: the ring of time drains, gently.

Others find it, gather around, and give it warmth.

When it's about to go out, someone donates it time.

Sooner or later it fades. It leaves its moment behind.

Choose an emoji, set it down where you are. A moment becomes a place.

Give a mark time, and stretch its hour.

Find the marks nearby and gather them into something larger.

A mark is about to vanish — revive it before its last breath.

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Manifesto

Moments matter because they end.

Nothing is forever: that is why a moment weighs.
We don't ask who you are. We only ask where you are, right now.
The gesture counts, not the name. An emoji left on a street corner says more than a thousand profiles.
The city is not a map of addresses: it is a living layer of people, moods, presences. Effimera makes it visible.
A mark alone goes out. Together it stays lit.
No feed to fill, no archive to keep.
Fragile things are let go when their moment comes.
Being here leaves no permanent trace. It leaves something rarer: the proof that we were here, together.

Nothing lasts forever. That's exactly why it's worth being here now.

Effimera is now in open beta on iPhone. Get it on TestFlight and leave your first mark.

Android later.