Eighty-Four Days Open your copy →

Live · the free edition, running here — tap around

The interactive edition · runs on your phone · offline · no account

Twelve
questions.
Sealed.

The Mirror, enforced by your phone. You answer twelve questions about where you actually are, seal them shut, run twelve weeks of ten daily habits — and on day eighty-four you read who you were on day one. There is no peek button. That is the product.

FreeDay one + two weeks The complete edition — all twelve weeks — €17 on its own, or included with every €29 reservation
No accountWorks offlineNobody can read your answers — including us
Two editions

Free for day one and two weeks. Complete for the season.

What's in itFreeComplete
Day oneThe twelve questions, the seal, the anti-vision, the stake, the ten, the map✓✓
Weeks one and twoThe grid, the line, the correction line✓✓
Weeks three to twelveThe rest of the season—✓
Three tokensFor the days you'll miss✓✓
Day 84Your answers back — the seal opens for everyone✓✓
The ReckoningThe same twelve questions, then the seal breaks — and the numbers✓✓
Season twoRun another twelve weeks from the map—✓
Your dataExport and import — it's yours✓✓
The paperYour printed copy, reserved from the first run — the €29 variant; the edition alone is €17—✓
Free is free — no card, nothing expiresComplete: €17 · with the paper €29Already reserved? Your receipt link carries your key
What arrives tonight

Two taps and it's on your home screen.

It installs from the link in two taps — an icon next to your other apps — and works offline. Your answers never leave your device: no account, no server, nobody can read them. Including us.

01

The Mirror, then the seal

Twelve questions, answered once. The seal is real — there is no peek button for eighty-four days.

02

Twelve weeks of marks

Ten habits, three keystones, a line graph that draws itself, one correction line a week. About a minute a day.

03

Day 84 — the Reckoning

The same twelve questions, answered cold. Then the seal breaks and day one appears beside today.

Nothing is stored. This is the mechanism, not your copy.
84
Sealed
84 days
opens —

Day 84 · the Reckoning

Who you were on day one, beside who you are.

Drag the line. This is the shape of the page that opens on day eighty-four: the same question, your day-one answer on one side, the cold re-answer on the other. Shown with a seeded example line from the demo — the day-84 side is yours to write.

Day eighty-four · the same question, answered cold

Q1 · again — what is the dull, low-grade dissatisfaction you've stopped noticing?

Day one · seeded example

“That I stopped noticing how much of the evening just disappears.”

The mechanisms, as built

Every screen here is the real thing.

Unretouched screenshots of the complete edition, on a seeded fourth week.

01

The seal

The yellow 84 stamp, the date it opens, the days until the Reckoning.

The sealed screen
02

The grid

Ten habits, three keystones, green and red marks, the line beneath.

Week four of the habit grid
03

The tokens

Three, spendable, finite. A missed day with a token spent stays inside the system.

The tokens page
04

The map

The whole system on one page, for the middle weeks when everything blurs.

The map page
Queries

Honest answers.

Is the interactive edition an app?

It behaves like one — home-screen icon, full-screen, offline — but it installs from a link in two taps, with no App Store and no account. It's the book, on your phone.

Where do my answers live?

On your device only. There is no server and no login; an export button moves everything if you change phones. Nobody can read what you write — including us.

What's free and what's paid?

Free: day one, the first two weeks, the tokens, and the seal opening on day 84 — forever, no card. Complete: weeks three to twelve and season two — €17 on its own, or included with your printed copy from the first run, €29.

When does the physical book ship?

When the first run is printed — the manufacturer is sampling now, and we won't invent a date before they commit one. Refund anytime before shipping, no argument.

Does 84 days build a habit?

Honestly: the research median is 66 days, with a range of 18–254 (Lally et al., 2010). Eighty-four clears the median — and what you'll actually have at the end is your own evidence, in your own handwriting.

What if I stop halfway?

The book has a page for that — the exit page. Stopping on purpose, in writing, on a date, is a decision. Drift is what the book exists to interrupt.

Day one starts tonight

There is no
peek button.
That is the product.

Free Open the free edition →