You know your chart.
So why are you still unsure?

What answer are you still looking for? In Korea, many people look at their saju before a big decision: a wedding, a new job, a move.

Not to be told what to do, but to think it through.
Why not look at yours first?

Step 1 · free

What is your chart short on?

Free, about 30 seconds. Calculated in your browser; your birth details are not sent anywhere.

For reflection and entertainment.

3

systems read side by side: saju, Zi Wei and Western astrology

1 of 12 →
1 of 518,400

your Sun sign, and your four saju pillars

30 sec

for your free mini chart, calculated in your browser

Saju

Your Day Master

癸

Yin Water, the rain

Day pillar 癸巳, Water Snake. Draws on people, rest and the right seasons.

WoodFireEarthMetalWater

Astrology

Your Big Three

  • ☉ Pisces Sun imaginative, soft-hearted
  • ☽ Capricorn Moon patient, ambitious
  • ↑ Pisces Rising how you come across first

The part you already know.

centuries of saju, for when you're unsure ✶

Same birthday, two traditions. Drag. (A fictional chart.)

In Korea, many people check before they decide.

Before a wedding
Couples, and often their parents, compare the two charts. It has its own name: gunghap (궁합).
Before a new job or a business
Is this a year to start something, or a year to get ready?
Before a move
Is it time to put down roots, or to keep going?
At the new year
Friends go together, then compare what they heard over coffee.
In a strange year
Someone says it sooner or later: go look at your saju.

Nobody is handing over the decision. It's a way to slow down and ask better questions. Got a big one coming up? What would you want to know first?

See my chart, free

Sound familiar?

Your signs describe who you are. Saju also reads time: what chapter you're in, what it's pushing on, and when it turns.

See what my chart is short on

Where this started

Astrology is to a lot of Americans what saju is to a lot of Koreans.

I grew up in Korea, where saju comes up the way signs do here: at a friend's birthday, before a wedding, over coffee when someone is having a strange year.

When I looked for saju in English, I mostly found it on its own, in words that assumed you already knew it. Nothing put it next to the Big Three you already know, or showed where the two agree.

So I built In-Yun. The charts come from a calculation engine I researched and built myself: solar terms, local solar time, Zi Wei palaces and planetary positions, calculated, not guessed. Every chart fact in your report is checked against that calculation before it reaches you.

— In-Yun ✶

You already know your Big Three. Here's what saju adds.

  1. Saju starts with one thing: your Day Master, the element of the day you were born. There are ten, like Yang Fire or Yin Water.
  2. Astrology reads where the planets were. Saju reads when you were born: year, month, day and hour, as four pillars.
  3. Instead of houses, five elements: wood, fire, earth, metal, water. Yours might lean hard on one and run short on another.
  4. You know your Saturn return. Saju has daeun: your life read in 10-year chapters.

A look inside Your Ultimate Chart

A report page: the reader's pattern, The Trailblazer, with keywords self-led, social and caring
Your pattern, in one line. Where all three systems say the same thing about you.
A report page: Zi Wei, saju and Western astrology each shown as a card with its core reading and element dots
Three systems, side by side. Each one's read on you, and where they part ways.
A report page: the Closeness and Affection section, blurred until the full chart is unlocked
Love, work, money and timing. In the preview these stay blurred until you unlock.

Sample pages from a fictional chart.

How it works

  1. Free mini chart. Birth date, time and city. Calculated right here in your browser.
  2. Free preview. We calculate all three charts (solar terms, local solar time, planetary positions) and show the first pages of your report. No payment, no account.
  3. Unlock the full report if you want it. It is built from your calculated chart, every chart fact is checked against the calculation, and you get a web report and a PDF by email, usually within minutes.

No birth time? You still get saju and astrology; Zi Wei and your Rising sign need the time.

Your options

Three ways to read your saju

A saju café in SeoulA free saju appIn-Yun
LanguageKoreanOften EnglishPlain English
What it readsSaju, by a personUsually saju onlySaju, Zi Wei and Western astrology
Next to your astrologyNoRarelyYes: where they agree, and where they split
What you keepWhat you rememberA screen in the appA web report and a PDF
CostVaries, in personFree to about $10Free preview · $19 in full

Who it's for, honestly

For you if

  • You know your Big Three by heart, and you're ready for the part of you they miss.
  • You've sent a personality result to the group chat with "this is literally you."
  • You want to see what three traditions agree on about you, and where they fight.

Not for you if

  • You want someone to tell you what will happen.
  • You need medical, legal or financial advice, or want a chart to decide for you.
  • You want a live reading with a person.

You've come this far. See the rest of it.

A written reading by a person often costs $50 or more. Yours is $19, once. No subscription.

For you

Your Ultimate Chart

$19

The chapter you're in, the pattern you keep repeating, and the places where saju, Zi Wei and your Big Three say the same thing about you.

  • Who you are, read three ways
  • Love, work and money: the patterns that keep coming back
  • Timing: this year, a look at next year, and your current 10-year chapter
  • Where the systems disagree about you, and why

20+ page PDF + web report · instant, by email

Start with the free preview

For the two of you

Couples Report

$29 or +$15 with Your Ultimate Chart

Is it them, or is it the two of you? Korean gunghap (궁합) compares two charts across all three systems: where you click, where you rub, and what's worth talking about before it's a fight.

  • Personality: how your two charts meet
  • Closeness & Affection
  • Trust & Commitment, for both of you
  • Timing windows for the relationship

20+ page PDF + web report · instant, by email

Order the Couples Report

Questions people ask me

Is this a prediction?

No. The reports describe patterns and tendencies as each tradition reads them. They are for reflection and entertainment, not medical, legal, financial or relationship advice, and they don't tell you what will happen.

What's free, and what's paid?

The mini chart and the preview are free. The preview shows the first pages of Your Ultimate Chart; the rest unlocks for $19. The Couples Report is $29 on its own, or $15 added to Your Ultimate Chart.

I don't know my birth time.

You still get saju (three of the four pillars) and Western astrology. Zi Wei and the Rising sign need a birth time, and the report says plainly what it left out.

Can I enter someone else's birth details?

For the Couples Report, yes, if you have their permission or you use the report only for your own reflection. We only ask for a name or nickname, birth date, birth time (optional) and birth city.

What happens to my data?

Free previews are deleted after 7 days. Birth details for paid reports are deleted 90 days after delivery. We never sell your data. See the Privacy Policy.

What if something goes wrong?

If a report fails, never arrives, or contains a calculation error, we fix it or refund you. See the Refund Policy.

Who can buy?

Anyone 18 or older.

You know your Sun sign. Now find out what it left out.

Show me, free

see you inside ✶

For reflection and entertainment. Charts calculated by the In-Yun engine. Report text drafted with AI.