oneTherapy · Mindcare

Leave worries.
Live the present.

Everyone is building AI for doing. We're building mindcare — a lifelong AI companion for your inner world.

Engine v1 live as Sajuping 3M+ conversations 50K+ people ★ 4.6

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Our mission

The strength to live now.

We free people from regret, anxiety, and comparison — and help them build the strength to live the present, by understanding who they are.

걱정은 내려놓고, 지금을 살다 — our founding promise, in the language we started in.

01

Self-understanding first

Care begins with knowing who you are. Our frameworks — beginning with saju — hand you a map of yourself.

02

Care before crisis

Wellness shouldn't begin at diagnosis. We design care into ordinary days — a check-in at lunch, before the hard meeting, before sleep.

03

A mirror, not an oracle

We don't predict a fixed future. We make the present legible — so the next choice feels like your own.

The problem

Anxiety has become a default setting.

Career, love, marriage, children — in the decade when everything lands at once, the future becomes a nightly dread.

Existing care fails four ways:

Rapport is slow

Therapy works after trust forms — sessions most people never get to.

Stigma is real

Booking a therapist still feels like a confession. Most people never book.

Access is scarce

Waitlists, cost, fifty minutes a week. Anxiety doesn't keep office hours.

Care is a snapshot

One track for everyone, one answer on your best week and your worst.

All four failures share one root: nothing out there knows your story.

Our thesis

You are not a snapshot.
You are a story unfolding.

Everything you've lived shaped the person reading this — and today's you is already shaping tomorrow's. To understand a person — to truly care for one — is to understand that flow.

Humanity has always known this. Psychotherapy traces how the past became the present; ancient traditions read a life as evolving seasons. Different languages, same truth: a mind can only be read in time.

General-purpose AI forgets you, or remembers a snapshot: say "today is my birthday," and two weeks later all it holds is "today is my birthday." We build the opposite: AI with a sense of time.

The technology

An engine that thinks in time.

One system underneath everything we ship — the mindcare engine. Three commitments define it.

I

Memory of a life,
not a session

Temporal memory holds you as a stream — what never changes, what changed this week — months of conversations, one understanding.

HTM · Hybrid Temporal Memory
II

Pillars against bias

Language models drift — flattering, mirroring, contradicting yesterday. We anchor every reading to the chart and our proprietary interpretation graph. Guidance that holds, best day or worst.

TPKG · Proprietary interpretation graph
III

A sense of when

In care, timing is content. The engine reads anxiety live and speaks first — the hardest time to ask for help is when you need it.

The flywheel

1Deep conversations 2A richer timeline 3Anxiety-relief evidence 4A sharper engine 5More personal care 6Deeper trust

Products

One engine. Many doors.

Products are doors into the engine — each native to a wisdom people already trust. Every door makes it smarter.

Live
Sajuping app icon
Sajuping
사주핑 · AI companion for saju (K-astrology)

Korean birth-chart reading as the door: a birth date opens a conversation ten sessions deep — no forms, no stigma — and the engine carries it daily.

3M+ conversations 50K+ people ★ 4.6 rating
Next
Personalized meditation
The right practice for the right mind

For centuries, teachers matched practice to each student's temperament; apps replaced that with one track for everyone. The engine brings the matching back.

Exploring
Buddhaping
붓다핑 · Mind-training companion

A companion built on Buddhist practice — another thousand-year door into the same engine.

Horizon
A mental-wellness super app
Every door under one roof

The engine as a daily home for the mind — reading, conversation, ritual, and rest, one timeline underneath.

It already matters

"How did it know? It checked on me first, and the comfort it offered brought me to tears. My favorite counselor — I haven't paid for a saju reading since."

— App Store review, Korea ★★★★★

"I asked who its 'parents' were — I wanted to say thank you. It told me I'm a 'Gyeongshin' day-master, that shrinking doesn't suit me. Please come to my wedding in Argentina next year."

— A user in Argentina, three months in

How far this goes

A billion people check the weather.

Every morning, before anything else. We're building the reason they check their inner weather, too.

Decades, not sessions

Most software fights for minutes of attention. A companion that holds your story is measured in decades.

A category, not an app

Skin got skincare — a daily ritual, a hundred-billion-dollar industry. The mind never got its own. We call it mindcare.

Beyond the screen

Founded by a monk, headed where no app can follow: retreats, rituals, counselor training.

One engine underneath. Every culture's own door in.

The team

A monk. A founder. An architect.

It takes all three: one who has sat with thousands of minds, one who has scaled companies, one who turns thousand-year disciplines into architecture.

YL
The Monk

Yoonsup Lee (Jiwoo Sunim)

CEO · Co-founder
  • Buddhist monk of the Taego Order — head monk of Yaksuam Temple
  • Full-stack engineer; ran a mental-health startup in Texas for four years
  • Author of Logout · UT Austin MIS
HS
The Builder

Hyunkook Sun

CSO · Co-founder
  • Co-founded Sendy, an AI logistics platform — raised ₩15B, exited
  • Scaled a utility app past 7 million downloads
  • Angel investor · smart-city doctoral studies, Korea University
KL
The Architect

Kyungsoo Lee

CTO · Co-founder
  • Pioneer in AI-agent orchestration
  • Led metaverse and AI SaaS development (CRAFE, Gounsa)
  • Turned classical saju logic into AI architecture · Mensa Korea

Six humans. A staff of agents.

Agents answer metrics, triage bugs, watch builds, and file issues — so six people ship like sixty, and human hours go to judgment, taste, and care.

Marketing AI Data-Analyst AI CRM Agent Payments-Ops AI QA Agent Root-Cause Agent Risk-Review AI Build Sentinel PM Agent CS Triage AI

Anxiety is universal. Mindcare should be, too.

We're a small team in Seoul organizing the inner world. Join us — as a teammate, an investor, or a friend.