In-Yun — your chart, read three ways (Korean saju · Zi Wei

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

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your Sun sign, and your four saju pillars

30 sec

for your free mini chart, calculated in your browser

Step 1 · free

Your mini chart

Your Day Master, element balance and signs. Calculated in your browser; your birth details are not sent anywhere.

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.

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.
Astrology reads where the planets were. Saju reads when you were born: year, month, day and hour, as four pillars.
Instead of houses, five elements: wood, fire, earth, metal, water. Yours might lean hard on one and run short on another.
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

Free mini chart. Birth date, time and city. Calculated right here in your browser.
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.
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 Seoul	A free saju app	In-Yun
Language	Korean	Often English	Plain English
What it reads	Saju, by a person	Usually saju only	Saju, Zi Wei and Western astrology
Next to your astrology	No	Rarely	Yes: where they agree, and where they split
What you keep	What you remember	A screen in the app	A web report and a PDF
Cost	Varies, in person	Free to about $10	Free 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're making a medical, legal, financial or relationship decision.
You want a live reading with a person.

When you want the whole chart

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

For you

Your Ultimate Chart

$19

Your saju Day Master and element balance, your Zi Wei life palaces, your Sun, Moon and Rising, and the places where all three systems say the same thing about you.

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

Korean gunghap (궁합): two charts compared across all three systems. How you meet, where you click, where you rub, and what to talk about.

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.

Start with your Day Master.

Make my free mini chart

see you inside ✶

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

Know your Big Three?
Meet your Day Master.