Yeodeol turns days
into eight honest lanes[1]

[1] Time, asset, health, speech, solve, family, luck, event — one calendar, no extra OS.

— Yeodeol

Yeodeol (여덜) is a life operating system. The number is the product: eight domains that share one clock, one identity, and one place to look.

Around that OS we ship small apps — cooking, water, radio, mental, companion. Each one talks to the same day, not a new silo.

In the building

If it does not sit on the calendar, it is not in the day.

Haeun Cho

We keep money in won, time in Seoul, and names in the domain they belong to.

Minjae Park

Eight lanes is enough. A ninth is usually a duplicate.

Sora Lim

The OS should feel quiet. The apps can be loud.

Theo Park

Health is yellow. Family is white. Don’t invent a new palette for a mood.

Yuna Seok

Ship the day you are in. Yesterday’s backlog stays backlog until someone asks.

Be in the room with…

People who built
the eight lanes first

Haeun Cho

Dohwa, 2024

Ships the drawing and capture lane. Used to run a print shop that never printed on time.

Minjae Park

Hansang, 2023

Keeps meals, markets, and two-person portions honest. Once recooked a week from a spreadsheet.

Sora Lim

Mulsave, 2024

Water, reminders, and the quiet health ticks. Built three failed hydration apps before this one stuck.

Theo Park

Kongkong, 2025

Companion loops and small rewards. Treats a streak as a receipt, not a personality.

Notes & news

Note

The day is the unit

Weeks and months are views. The truth lives on a Seoul date, in the domain that owns the block.

From the studio

Come build on the eight.

No pitch deck required. A day you already live is enough.

Connect