
Choose the city of birth. Its historical time zone and daylight saving determine the birth instant; longitude correction sets the solar time used for the Day and Hour Pillars. If your city is missing, choose a nearby city in the same time zone.
When the birth time is unknown, the birthplace does not affect the result.
Choose your MBTI to explore your personality alongside your Saju. Leave it blank if you’re unsure.
STEP 1 · CALCULATE
Built on the three classical canons · 16 types, 60 combinations
STEP 2 · INTERPRET
Yong Hae-in interprets your chart.
📱 Optimized for phone wallpaper (9:16)

TALISMAN (OPTIONAL)
Your name is processed locally and never stored
Celebrity talismans from the blog · Colors symbolize the Vital Element
Saju-based. Birthdate & zodiac not shown. Your Day Pillar only.
Read the Vital Element alongside balance and seasonal climate.
👑 Premium Reading
From $7.50 · tax incl.
👑 Premium Reading
From $7.50 · tax incl.
👑 Premium Reading
From $7.50 · tax incl.
See the positions and evidence behind combinations, clashes, tensions, breaks and harms.
Distinguish the Day pillar’s void branches from positions actually affected.
Special auspicious & inauspicious stars — Heavenly Virtue, Literary Star, Sword Blade, and more
Traditional date selection · With a chart, also considers Vital Element roles and seasonal conflicts
※ Today's Fortune reads your own energy for the day; date selection reads whether the day suits the task — different yardsticks, so the two can disagree.
※ This calendar works in days. It does not read hours. Why a date suits your chart, and which of the good days is best, continues in the reading.
First, calculate your chart in the K-Saju tab.
Enter your partner's details to check your compatibility.
Using your birth location. Uncheck "Same as mine" if they were born elsewhere.
Choose the city of birth. Its historical time zone and daylight saving determine the birth instant; longitude correction sets the solar time used for the Day and Hour Pillars. If your city is missing, choose a nearby city in the same time zone.
When the birth time is unknown, the birthplace does not affect the result.
Both MBTI types help inform the relationship reading. Leave any unknown type blank.
Partner's MBTI
STEP 1 · CALCULATE
Built on the three classical canons · 16 types, 60 combinations
Patent-pending tech · 16 types, 60 combinations × deep reading
STEP 2 · INTERPRET
Yong Hae-in interprets your chart.
Compatibility Score
💕
0
Me
Partner
Your Archetype
Partner's Archetype
Cross-comparing both people's 10-year Major Luck (大運) cycles to reveal how compatibility changes over time.
Both charts · Korean auspicious-day rules · unlucky days excluded automatically
※ This calendar works in days. It does not read hours. Why a date suits the two of you, and which of the good days is best, continues in the reading.
No ads. No noise.
Just the reading.
LEARN SAJU
What is saju? · Saju compatibility · Free saju chart
K-MUDANG
© 2026 K-MUDANG. All Rights Reserved.
Patent filed 10-2026-0010452 · ™ Trademark filed 40-2026-0030975
Compatibility works the same way. First the engine calculates both charts and the score (free). Then Yong Hae-in interprets only that result and writes your reading (credits). Separating the two reduces errors caused by asking AI to work out the chart itself.
STEP 1 — Your chart first
In the Saju tab, enter your birth details and tap Calculate Saju. Your chart carries over to this tab.
STEP 2 — Your partner (free)
Enter your partner’s birth details, gender and your relationship, then tap Calculate Compatibility. The score, relationship type and category scores are calculated and appear right away.
Enter your partner’s birth time in 24-hour time too. Each person’s Hour Pillar uses longitude and daylight-saving corrections for their own birthplace and date. Select your partner’s birthplace separately.
Don’t know your partner’s birth time? Tap "Time unknown". Their chart is then calculated without the Hour Pillar, so the reading uses the three known pillars (six characters).
STEP 3 — Compatibility reading
When you tap Compatibility Reading, Yong Hae-in reads both charts and writes your reading. Each relationship type (Romance, Friend, Business, Family) gets its own kind of reading. Your reading appears as it is written.
If you step away to another app mid-reading, it picks up where it left off when you come back.
After a face reading in the Face Reading tab, check "Include my face reading" to add your own face reading to the compatibility reading (no extra charge).
For your first compatibility reading, stick mostly to facts about the two of you. How long you have known each other, where things stand, anything that actually happened.
A compatibility reading looks at how two sets of eight characters meet. Two pairs with the same characters still differ, because how they met and what they have been through together shape how that match shows.
See how the two charts have shown up between you so far, and make the reading your own.
Save a loaded question like "We should break up, right?" for a follow-up after the first reading. The first reading is the foundation for every answer after it, so a hope slipped into it can tilt them all.
After your first reading, ask what you want to know, one question at a time. Follow-up answers start almost at once. The verdict comes from the two charts, and what moves it is what actually happened between you, not the mood of the question. If something new happens, just say what happened, like "We had a big fight yesterday." The reading takes it into account.
✕ In the first reading — "We should break up, right? It’s not just me, is it?"
◯ In the first reading — "Together a year. Since marriage came up, we keep clashing over money."
◯ As a follow-up — "Should we hold off on marriage a little, or decide now?"
Credits
· Trial $7.50 = 3 / Starter $22 = 10 / Standard $41 = 20
· 1 credit per reading, 1 per follow-up question, 1 per ink-and-wash portrait
· Talismans cost nothing while you have credits left
· Credits never expire and work for both Saju and Compatibility
Tap a title to open it
Set the relationship to Romance and a wedding date card appears in the results, with dates chosen from both charts. The next two months are free.
Ratings compare dates for the chosen task. Tap a date to see favorable factors, penalties and avoidance reasons. Month Break excludes New Start / Opening, Moving and Wedding dates; a birth-year branch clash excludes Moving and Wedding dates. Day-branch clashes are weighed with other factors, and favorable Saenggi, Cheonui and Bokdeok conditions receive their bonus when present. Traditional conditions inform the assessment; weights and rating thresholds are set by K-MUDANG and do not represent the probability of an event.
When your first compatibility reading finishes, a "Save this compatibility reading?" prompt appears. Save it, and next time you sign in and enter the same two people, it opens again, with follow-ups ready to continue.
Compatibility keeps one lifetime reading and one Year Ahead reading. Saving a match with someone else replaces the old one.
Follow-ups are not added to your saved first reading. Requests and replies are kept to recover interrupted readings and look into errors, and are deleted after 30 days. Use "Copy Response" to keep an answer.
When the reading engine is updated, we suggest getting a fresh first reading and saving that one instead. A saved reading stays exactly as the engine of its day wrote it, and the calculations and interpretation may have grown more precise since. If the "Reading engine" version at the top right has gone up, tap "🗑 Delete" above your saved reading, then get a new one and save it (1 credit). Want to keep the old text as well? Use "Copy Response" before you delete it.
After a face reading, an "Include my face reading" box appears in the Compatibility tab. Check it and your next compatibility reading takes your face into account. Your partner’s face is never guessed.
When you reopen a saved compatibility reading that includes your face reading, the portrait you set as your main one in “My ink-and-wash portraits” on the Face Reading tab appears above it. Change your main portrait and the reading shows the new one.
Original video and full face landmarks stay in your browser and are not uploaded. Only if you choose the ink-and-wash portrait (1 credit) in the Face Reading tab is one photo you take or choose sent, solely to paint it. If included in the first reading, the feature summary and interpretation are sent and retained with the reading and may also inform follow-ups.
MBTI never changes the score or verdict. Add it and both types are read alongside the charts.
Your MBTI from the Saju tab is used automatically in Compatibility. Choose your partner’s four-letter type in the Compatibility tab. You may enter just one person’s type. Leave any unknown type blank; only the types entered inform personality descriptions and advice for the two of you.
Choose For Two just above the reading button and the coming year for the two of you is read month by month. It costs one credit like any reading and is saved separately from your lifetime compatibility reading.
It is open from October 15 to March 31. From October 15 to December it reads the next year; from January to March it reads the current year.
From April 1 to October 14 a new For Two reading is not available. You can still get a lifetime compatibility reading all year.
During that time you can still open a saved For Two reading and keep asking follow-up questions. If you have one saved, the option above the reading button stays visible.
When the next For Two season opens on October 15, last year’s saved For Two reading is deleted, and you get one credit back for each saved reading removed. Copy anything you want to keep before then.
1. Start with the Vital Element. It is the element this chart needs to draw on first. Balance and Climate are considered together to make this choice. When two elements are listed, read their roles together.
2. Balance concerns your strength; Climate is the birth-month prescription. Balance shores up a weak Day Master or gives an overly strong one an outlet. Climate is the prescription the Treasure Mirror for Seasonal Balance gives this Day Master for its birth month. Usually it adjusts temperature and moisture. In some months it feeds the Day Master from its source, or tempers or washes it. Dryness is assessed even without strong heat. If the moisture or warmth the chart needs is already at work in it, that role is kept as Conditional. When it is already ample, no separate Climate element is chosen. Whether more of that element helps in a later period is assessed separately.
3. Read each role separately, even when the same element repeats. The Vital Element identifies the central function, Balance concerns the Day Master’s strength, and Climate concerns the birth-month prescription, usually temperature and moisture. The three entries do not have to name the same element. Keeping a needed function working and adding more of that element are different questions.
4. Support helps; Avoid marks possible strain. Support helps the needed job. The Avoid element matters when it obstructs that job or adds strain. A cold room needs heating, but too much heat becomes uncomfortable. The role depends on how the energy acts.
5. Read Conditional and No separate selection in context. When Avoid is marked Conditional, the card describes the situations in which it becomes a strain. No separate Climate selection means one of two things. Either your chart as entered has not established a separate adjustment, or the fire needed to warm the cold or the water needed to cool the heat is already ample in the chart. The card says which. The card distinguishes missing birth details from functions requiring review. Hidden roots, clash contacts and moisture evidence are considered separately. No separate Support or Avoid means that role was not assigned separately.
6. Read a Conditional Climate element with its explanation. It recognizes a needed warming or moistening function in your chart as entered under the stated conditions. It does not establish that more is needed or that the present supply is sufficient, nor does it mean every year that brings that element is favorable.
Without a birth time, the reading uses three known pillars. Adding the hour supplies the fourth pillar and can change some decisions. Even with a known hour, competing functions can leave a decision conditional.
Compatibility checks both ways: whether your partner brings the element you need, and whether you bring the one they need. Read the result for the relationship you chose (Romance, Friend, Business or Family).
Your birth date and time form four pillars. Dates are entered in the solar (Gregorian) calendar. Year and month boundaries follow seasonal transitions such as the Start of Spring, so a chart month need not change on the first calendar day.
Time is corrected for the birthplace. Longitude and applicable daylight saving time are included. After correction, the date changes at 11 pm. An unknown hour is left blank.
Strength is more than a count of characters. The season, roots and supporting or restraining elements are considered together. A tree in spring and a tree in winter have different conditions. The bar is a reference measure of strength.
Needed roles are then selected. Balance concerns strength, Climate is the birth-month prescription, usually for cold, heat, dryness and moisture, and the Vital Element is the role to use first. Support and Avoid describe what helps or obstructs that role.
The reason for no separate Climate selection also matters. The card distinguishes an adjustment not established by your chart as entered, a needed element already present three or more times among the other stems and the branch main stems, a decision sensitive to birth details, and competing functions. Dry and wet soil, hidden roots and clash contacts are considered separately. A monthly prescription adopted under the chart’s conditions is the Climate element. One not adopted is noted only as a reference.
Conditional effects have a score range. When an incoming influence may both help and burden a needed function, the score is shown as an interval. Having a path to relief does not mean the relief is enough. When ranges overlap, all candidates for the best and worst years or months are shown. A shared chart source is not counted as several independent rescues.
Overlapping roles are read by their jobs. Winter Water may need Fire for warmth, while additional Fire can obstruct another needed job. Warmth and strain are explained separately; this is why Avoid can say Conditional.
The reading follows the calculated result. The engine calculates the chart and decisions; Yong Hae-in explains them. Sources and criteria are listed below.
Yong Hae-in will not curse anyone or wish misfortune on anyone. Requests like that can trip AI safety systems and stop the reading or cause an error. Pouring your heart out is always welcome.
Readings that stop or end in an error because of such requests are not refunded.
Article 1 (Purpose)
These terms govern the conditions and procedures for using the services provided by K-MUDANG (hereinafter "the Company"), including saju (Four Pillars of Destiny) analysis, compatibility readings, talismans (unlimited while credits remain) (hereinafter "the Service").
Article 2.1 (Face Reading Feature)
Face reading uses your device camera to provide entertainment and self-reflection content. Camera images and full facial coordinates are processed in your browser and are not transmitted to or stored on our server. If you choose to include face reading in Saju or compatibility, measurement categories, ratios and an interpretation summary are transmitted and stored as part of that AI reading request. If you choose an ink-and-wash portrait (1 credit), one photo you take or choose is sent only to paint it and is not stored. The painting is an artistic reinterpretation that may refine your features; your face reading is based on the original capture, not the painting. This feature is not a scientifically validated prediction.
Article 2 (Nature of Service)
This Service provides entertainment and reference content based on traditional Eastern philosophy (Saju Myeongri). The results are not based on scientific or academic evidence and should not be used as the basis for important life decisions.
Calculation methods and differences between schools
The Four Pillars and solar-term transition times can be checked against calendar and astronomical data, the birth information entered and the time-correction settings applied. Judgments such as helpful elements, chart structure and Day Master strength can differ between schools, texts and studies because their methods and priorities differ. K-MUDANG applies its own rules informed by classical Ziping principles. It distinguishes balance from seasonal needs. For reviewed chart conditions, the function needed first becomes the Vital Element; support and caution describe what helps or burdens that function. Charts without an adopted priority retain a provisional application of the existing balance method. Seasonal selection and structural assessment cover implemented conditions, rather than every classical prescription or the complete theory of a particular school.
Differences in element judgments, chart structure or interpretation from other schools, texts, studies, practitioners or services alone do not constitute a calculation error or service defect and are not grounds for a refund of services already used.
If the Four Pillars or solar-term transition times differ from our stated calculation method, we review the input and settings to check for an actual error. This does not limit statutory cancellation or refund rights for confirmed calculation or system errors, or services that differ from their advertised or agreed description.
Article 3 (Eligibility)
The Service is available to anyone aged 14 or older. The reading feature requires a Google account login.
Article 3-2 (Account Creation and Privacy)
Your first sign-in creates a member account without a separate registration application. We process and store your sign-in account’s email, display name and profile image, your entered Saju details and optional MBTI, and reading and usage records to provide the Service. We do not collect your sign-in account’s password, email contents or contact list. Face-reading camera images are processed only in your browser, except one photo you take or choose to paint an ink-and-wash portrait, if you choose one. See the Privacy Policy for the information processed, purposes and retention periods.
Article 4 (Reading Services & Payments)
1. Basic features (saju chart generation, basic compatibility analysis) are free and available with unlimited use after a simple sign-in.
2. Paid services are provided as credit packages. Credits are one shared pool — a single purchase works for Saju and Compatibility readings, follow-up questions and ink-and-wash face-reading portraits (one credit per portrait, used only when the painting is finished):
- Credits Package Trial ($7.50): 3 credits + unlimited talismans & compatibility talisman cards
- Credits Package Starter ($22): 10 credits + unlimited talismans & compatibility talisman cards
- Credits Package Standard ($41): 20 credits + unlimited talismans & compatibility talisman cards
- MVP tier: granted automatically once payments over the past year total about $164, and kept for one year from that moment. While MVP, all locked content stays open and talisman generation is unlimited even with zero credits; 10 credits are gifted on promotion, on each renewal, and every December 27. If yearly payments total less than $164, the account returns to the regular tier.
3. Services are delivered immediately upon payment. As digital content, cancellation is restricted once the service has begun, in accordance with the E-Commerce Act.
4. Full refund is available within 7 days of purchase if the service has not been used. 'Unused' means 0 readings; even without a reading, viewing the premium analysis cards unlocked by payment generating a talisman / compatibility talisman card, or receiving an ink-and-wash portrait counts as use of digital content and may restrict refunds. In addition, if a reading is interrupted or not produced normally because of inputs that run against the purpose of the service — such as requests to curse a third party, abusive language, or wishing misfortune on others — this does not constitute a service defect and is not grounds for a refund.
5. PayPal payments are charged in US dollars (USD). Card payments through Toss Payments are charged in Korean won (KRW). The checkout shows each payment amount for your selected plan. Refunds are issued to the original payment method.
6. Payment & refund inquiries: +82-10-5122-3255 / kmudang.official@gmail.com
Article 4-2 (Termination)
1. While signed in, select “Delete account” at the very bottom of the Korean, Japanese or English main page, below the business and customer support information. Review the notice and confirm with “Delete my account” to terminate your account.
2. Your account, Saju profile, readings and remaining credits are deleted and cannot be recovered.
3. Transaction records subject to statutory retention, including contract and payment records, are kept for five years and disconnected from your member account. Statistical and operational records are also disconnected from your member account.
4. If a payment qualifies for a refund, please apply before deleting your account so that we can check your usage. Deleting your account does not itself extinguish cancellation or refund rights under applicable law.
Article 5 (Disclaimer)
1. The Company does not guarantee the accuracy or completeness of any Service results.
2. The Company is not liable for any direct or indirect damages arising from use of the Service.
Article 6 (Intellectual Property)
All content, designs, and code of the Service belong to the Company. Unauthorized reproduction or distribution is prohibited.
Article 7 (Changes to Terms)
The Company may update these terms within the bounds of applicable law. Changes will be announced within the Service.
Effective date: January 19, 2026 · Last updated: October 31, 2026
1. Information We Collect and Process
1) Sign-in: account identifier, email address, display name and profile image URL. Your first sign-in creates a member account.
2) Entered details: birth date, birth time and birthplace, gender, solar/lunar calendar and optional MBTI. Profile details entered or changed while signed in are automatically stored on our server for return visits and use across devices; they may also remain in browser storage.
3) AI readings: analysis data, questions, conversation and reading results are transmitted to and processed by our server and AI service, and stored on our server. Compatibility requests may include the other person’s entered Saju details and optional MBTI; only enter information you may lawfully provide.
4) Usage and payments: visits, clicks and other usage records, access logs, referral information, language, country code, and payment, refund and credit records. Payment providers handle payment credentials; we do not directly collect or store full card numbers or card passwords.
5) Optional notifications: consent history, push subscription details and the Saju details used for notifications. Marketing updates and browser notifications are used when you choose them.
6) Ink-and-wash portrait (optional): if you choose it, one photo you take or choose and the finished painting.
2. Purposes of Processing
1) Sign-in, user identification and service provision
2) Restoring entered details, Saju, compatibility and AI readings, and resuming readings
3) Managing credits, payments, refunds and access, and resolving errors
4) Service improvement, usage statistics and your chosen updates and notifications
3. Retention Periods
1) Account and Saju profile: deleted when you delete your account.
2) AI requests, conversations and readings: even unsaved records are stored for recovery and error handling, and records older than 30 days are regularly removed. Readings you choose to save are retained until deleted or your account is deleted. Saved year-ahead readings are released from saved status after their target year ends and are then subject to cleanup.
3) Browser-stored information may remain after you close the window. You can remove it using your browser’s site-data settings.
4) Transaction records subject to statutory retention, including contract and payment records, are kept for five years. Payment and usage records are disconnected from your member account on account deletion; information required by law is retained for the mandated period.
5) Ink-and-wash portrait: the photo is not kept. Up to three finished paintings made with a credit are kept in My ink-and-wash portraits in your account and are deleted when you delete them there or delete your account. Our operator may view it to answer your enquiries and check quality. The request time, whether it was finished and whether a credit was used remain in usage records.
6) Portrait on a saved reading: a saved reading that includes face reading shows the ink-and-wash portrait you chose as your main portrait, on any device signed in to that account. The free face-reading diagram is not attached to readings. Deleting a saved reading leaves your portraits in place.
4. External Services and Information Processing
We do not sell personal information. We use Supabase for authentication and data storage, Google Gemini for AI readings, Vercel for hosting, Toss Payments and PayPal for payments, and Google Analytics for usage statistics. Information needed for each function is processed by the relevant service. When you request an AI reading, your analysis data, questions and conversation are sent to the AI service. If you choose an ink-and-wash portrait, one photo you take or choose is sent to Google Gemini to paint it. Any disclosure required by law is handled under applicable law.
5. Data Deletion
Information is deleted without delay when its retention period expires or its processing purpose is fulfilled. Records that must be retained by law are managed only for the applicable purpose.
6. Your Rights and Account Deletion
Contact the customer support email below to request access, correction, deletion or suspension of processing. To delete your account yourself, sign in and select “Delete account” at the very bottom of the main page, below the business and customer support information, then confirm with “Delete my account”. Your account, Saju profile, readings and remaining credits are deleted and cannot be recovered. Statutory transaction records and usage records disconnected from your member account are managed under the retention rules above. Please request any eligible refund before deleting your account. Account deletion does not itself remove statutory refund rights.
7. Cookies and Analytics
We use cookies, browser storage and Google Analytics to maintain sign-in, restore entered details and measure usage. You can reject cookies or delete site data in your browser settings; doing so may affect sign-in persistence and restoration of details.
8. Information We Do Not Collect and Face Images
We do not collect your sign-in account’s password, email contents or contact list. Face-reading camera images and full facial coordinates are processed only in your browser and are not transmitted to or stored on our server. The camera is used only with your permission. The exception is the ink-and-wash portrait: if you choose it, one photo you take or choose passes through our server to Google Gemini to paint the portrait. We do not store that photo. Google does not use data received through its paid API to improve its products and keeps it only for a limited time to check for misuse. If you choose to include face reading in Saju or compatibility, measurement categories, ratios and an interpretation summary are sent to our server and AI service as part of that AI request and stored with the reading records.
9. Privacy Officer
Name: Daein Kim
Email: kmudang.official@gmail.com
Effective date: January 19, 2026 · Last updated: October 31, 2026
Article 1 — Overview
K-MUDANG guarantees the right to cancel and receive a refund in accordance with applicable e-commerce consumer protection laws.
Article 2 — Paid Services
· Credits Package — Trial $7.50 (3 credits) / Starter $22 (10 credits) / Standard $41 (20 credits)
· One shared credit pool: a single purchase covers Saju & Compatibility readings, follow-up questions and ink-and-wash face-reading portraits + unlimited talismans & compatibility talisman cards
VAT included. Services are delivered immediately upon payment (digital content).
✅ Refundable
· Service unused (0 readings) within 7 days of purchase → Full refund
· Payment errors or duplicate charges → Full refund
· System error preventing service delivery → Full refund or service re-provision
🚫 Non-Refundable
· reading used even once (digital content delivery commenced)
· Premium analysis cards viewed after unlock, a talisman / compatibility talisman card generated, or an ink-and-wash portrait received — even with 0 readings (digital content delivery)
· More than 7 days since purchase
· Change of mind after service has been used
Calculation methods and differences between schools
The Four Pillars and solar-term transition times can be checked against calendar and astronomical data, the birth information entered and the time-correction settings applied. Judgments such as helpful elements, chart structure and Day Master strength can differ between schools, texts and studies because their methods and priorities differ. K-MUDANG applies its own rules informed by classical Ziping principles. It distinguishes balance from seasonal needs. For reviewed chart conditions, the function needed first becomes the Vital Element; support and caution describe what helps or burdens that function. Charts without an adopted priority retain a provisional application of the existing balance method. Seasonal selection and structural assessment cover implemented conditions, rather than every classical prescription or the complete theory of a particular school.
Differences in element judgments, chart structure or interpretation from other schools, texts, studies, practitioners or services alone do not constitute a calculation error or service defect and are not grounds for a refund of services already used.
If the Four Pillars or solar-term transition times differ from our stated calculation method, we review the input and settings to check for an actual error. This does not limit statutory cancellation or refund rights for confirmed calculation or system errors, or services that differ from their advertised or agreed description.
Refunds are processed via the original payment method.
Article 3 — How to Request a Refund
Phone: +82-10-5122-3255
Email: kmudang.official@gmail.com
Subject: [Refund Request] Email / Name
Body: Payment date, amount, reason
Processing time: within 3 business days
Last updated: October 31, 2026
Your full written reading, section by section for your chart (nature, work, money, love, health, the years ahead), plus follow-up questions. 1 credit = 1 reading or 1 follow-up.
Unlimited talismans while you hold credits.
✓ Not used yet? Full refund within 7 days.
PayPal · charged in US dollars (USD)
PayPal $41.00 USD · card below ₩55,000
Secure card checkout by Toss Payments
[Required] Payment Service Terms & Privacy Policy
· Full refund within 7 days if service unused (0 readings)
· No refund once any reading is used
· Refunds processed via original payment method
· Inquiries: +82-10-5122-3255 / kmudang.official@gmail.com
Billed in Korean won (KRW).
Transfer the exact amount to the account below. Credits will be added automatically upon deposit.
20 credits will be added automatically after deposit is confirmed.
Order is cancelled automatically if not paid by the due date.
K-MUDANG works in two steps. First a calculation engine works out your chart (free). Then Yong Hae-in interprets only that result and writes your reading (credits). Separating the two reduces errors caused by asking AI to work out the chart itself.
STEP 1 — Calculate your chart (free)
Enter your birth date, birth time, gender and birthplace, then tap Calculate Saju. Your eight characters, element balance, Vital Element and ten-year cycles are calculated and appear right away.
Your birth details are saved, so they’re already filled in next time.
Don’t know your birth time? Tap "Time unknown". The chart is then calculated without the Hour Pillar, so the reading uses six of the eight characters.
STEP 2 — Get your reading
When you tap Saju Reading, Yong Hae-in reads your chart and writes your reading. Your reading appears as it is written. When it is done, you can ask follow-up questions.
If you step away to another app mid-reading, it picks up where it left off when you come back. Credits are only used once the reading is complete.
After a face reading in the Face Reading tab, check "Include my face reading" to add it to your reading (no extra charge).
For your first reading, stick mostly to facts about yourself. Your work, where things stand, anything that actually happened.
A Saju reading works from the eight characters set by your birth year, month, day and hour. People born at the same moment share the same eight characters, yet no two of them live the same life. The chart is the same, but upbringing, work and the choices a person makes shape how it shows.
See how your chart has shown up in your life so far, and make the reading your own.
Save questions like "Should I quit this year?" for a follow-up after the first reading. The first reading is the foundation for every answer that follows, so a hope slipped into it can tilt them all.
After your first reading, ask what you want to know, one question at a time. Follow-up answers start almost at once. If something new happens in between, just say what happened, like "I had a job interview yesterday." The reading takes it into account.
✕ In the first reading — "Should I quit this year? Will it work out?"
◯ In the first reading — "Designer at an ad agency for 7 years. I have an offer that pays 30% more, and I’ve been married for two years."
◯ As a follow-up — "Staying where I am or taking the new offer. Which suits my chart?"
STEP 3 — Talisman (optional)
Once your chart is ready you can make a talisman. Its color represents your Vital Element; the image and inscription follow your Day Pillar.
A name is optional.
Credits
· Trial $7.50 = 3 / Starter $22 = 10 / Standard $41 = 20
· 1 credit per reading, 1 per follow-up question, 1 per ink-and-wash portrait
· Talismans cost nothing while you have credits left
· Credits never expire and work for both Saju and Compatibility
· Use them for family, partners and friends too
Tap a title to open it
Type the hour and minute in the ⏱ Birth time box, in 24-hour time. 3:10 pm is 15:10.
Time is corrected using the selected birthplace, historical standard time, daylight saving and time-correction settings. Longitude correction does not include the equation of time. Check the applied correction and Hour Pillar below the Birth time box.
With a time, the Hour Pillar adds two more characters and your chart is read on all eight. Readings about children, later life (from 46) and the Life Palace depend on it.
If your time falls near the boundary between two Hour Pillars, or a new solar term begins that day, we say so right under the Birth time box.
We correct for longitude and daylight saving, not the equation of time. When comparing with another almanac, match the birthplace, day boundary and correction settings too.
The day changes when the Rat Hour begins at 11 pm in the corrected time. The corresponding clock time depends on birthplace, historical standard time, daylight saving and the selected correction.
Check the correction shown below the Birth time box before deciding which date applies; the clock time alone does not establish the boundary.
Some schools count 11 pm to midnight as the same day. Neither is wrong; they draw the day boundary differently. K-MUDANG always starts the new day when the corrected Rat Hour begins at 11 pm.
Just type your birth time. The engine sorts out which side of the line you fall on.
Tap Calculate Saju and today’s fortune appears under your chart, free. Tap "Get" beneath it to receive the day’s fortune as an alert every morning. You can turn it on or off any time.
Alerts need Google sign-in and a saved birth date, and they follow the chart that was on screen when you tapped "Get". They work in Android Chrome right away. On iPhone, add the app to your Home Screen first (in-app browsers, such as Instagram’s, are not supported).
Clearing your browser’s cookies turns alerts off. Just switch them back on.
Once your chart is ready, the date card opens by itself. Pick New Start / Opening, Moving, Exam or Birth (women) and it finds good days. The next two months are free. Opening all twelve months needs credits.
Each date is assessed through its pillars, Twelve Officers and avoidance conditions, alongside your Vital Element, Support and Avoid elements and seasonal needs. So the same day scores differently for different people. For wedding dates, set the relationship to Romance in Compatibility.
Ratings compare dates for the chosen task. Tap a date to see favorable factors, penalties and avoidance reasons. Month Break excludes New Start / Opening, Moving and Wedding dates; a birth-year branch clash excludes Moving and Wedding dates. Day-branch clashes are weighed with other factors, and favorable Saenggi, Cheonui and Bokdeok conditions receive their bonus when present. Traditional conditions inform the assessment; weights and rating thresholds are set by K-MUDANG and do not represent the probability of an event.
Today’s Fortune assesses the day’s energy; date selection assesses conditions for the chosen task. Different factors and weights can produce different ratings.
Do a face reading with your camera in the Face Reading tab. Back in Saju or Compatibility, an "Include my face reading" box will appear. Check it and your next reading takes your face into account. Leave it unchecked and nothing changes.
When you reopen a saved reading that includes your face reading, the portrait you set as your main one in “My ink-and-wash portraits” on the Face Reading tab appears above it. Change your main portrait and the reading shows the new one.
Original video and full face landmarks stay in your browser and are not uploaded. Only if you choose the ink-and-wash portrait (1 credit) in the Face Reading tab is one photo you take or choose sent, solely to paint it. If included in the first reading, the feature summary and interpretation are sent and retained with the reading and may also inform follow-ups. Compatibility uses only your own face, without inferring your partner’s features.
Android (Chrome): tap "Add to Home Screen" at the bottom of the page for instructions. You can also use the Chrome menu → "Add to Home screen".
iPhone (Safari): Share button → Add to Home Screen. If opened inside an app, open the link in Safari first.
Opened from the home-screen icon, it runs full screen without the address bar.
You can dismiss the installation notice and open the instructions again from the page footer.
When your first reading finishes, a "Save this reading?" prompt appears. Save it, and next time you sign in and enter the same birth details, it opens again, with follow-up questions ready to continue.
You can keep one lifetime reading and one Year Ahead reading for Saju, and the same for Compatibility. Saving a new one replaces the old one in that slot.
Follow-ups are not added to your saved first reading. Requests and replies are kept to recover interrupted readings and look into errors, and are deleted after 30 days. Use "Copy Response" to keep an answer.
When the reading engine is updated, we suggest getting a fresh first reading and saving that one instead. A saved reading stays exactly as the engine of its day wrote it, and the calculations and interpretation may have grown more precise since. If the "Reading engine" version at the top right has gone up, tap "🗑 Delete" above your saved reading, then get a new one and save it (1 credit). Want to keep the old text as well? Use "Copy Response" before you delete it.
Add your MBTI and we read the type you chose alongside your chart, showing where the two agree and where they pull apart. Your Vital Element and cycles still come from the chart alone.
Choose your four-letter MBTI type. It informs personality descriptions and advice. Leave it blank if you do not know your type or prefer a chart-only reading.
Choose Year Ahead just above the reading button and the coming year is read month by month. It costs one credit like any reading and is saved separately from your lifetime reading.
Year Ahead is open from October 15 to March 31. From October 15 to December it reads the next year; from January to March it reads the current year.
From April 1 to October 14 a new Year Ahead reading is not available. You can still get a lifetime reading all year.
During that time you can still open a saved Year Ahead reading and keep asking follow-up questions. If you have one saved, the option above the reading button stays visible.
When the next Year Ahead opens on October 15, last year’s saved Year Ahead reading is deleted, and you get one credit back for each saved reading removed. Copy anything you want to keep before then.
1. Start with the Vital Element. It is the element this chart needs to draw on first. Balance and Climate are considered together to make this choice. When two elements are listed, read their roles together.
2. Balance concerns your strength; Climate is the birth-month prescription. Balance shores up a weak Day Master or gives an overly strong one an outlet. Climate is the prescription the Treasure Mirror for Seasonal Balance gives this Day Master for its birth month. Usually it adjusts temperature and moisture. In some months it feeds the Day Master from its source, or tempers or washes it. Dryness is assessed even without strong heat. If the moisture or warmth the chart needs is already at work in it, that role is kept as Conditional. When it is already ample, no separate Climate element is chosen. Whether more of that element helps in a later period is assessed separately.
3. Read each role separately, even when the same element repeats. The Vital Element identifies the central function, Balance concerns the Day Master’s strength, and Climate concerns the birth-month prescription, usually temperature and moisture. The three entries do not have to name the same element. Keeping a needed function working and adding more of that element are different questions.
4. Support helps; Avoid marks possible strain. Support helps the needed job. The Avoid element matters when it obstructs that job or adds strain. A cold room needs heating, but too much heat becomes uncomfortable. The role depends on how the energy acts.
5. Read Conditional and No separate selection in context. When Avoid is marked Conditional, the card describes the situations in which it becomes a strain. No separate Climate selection means one of two things. Either your chart as entered has not established a separate adjustment, or the fire needed to warm the cold or the water needed to cool the heat is already ample in the chart. The card says which. The card distinguishes missing birth details from functions requiring review. Hidden roots, clash contacts and moisture evidence are considered separately. No separate Support or Avoid means that role was not assigned separately.
6. Read a Conditional Climate element with its explanation. It recognizes a needed warming or moistening function in your chart as entered under the stated conditions. It does not establish that more is needed or that the present supply is sufficient, nor does it mean every year that brings that element is favorable.
Without a birth time, the reading uses three known pillars. Adding the hour supplies the fourth pillar and can change some decisions. Even with a known hour, competing functions can leave a decision conditional.
Your birth date and time form four pillars. Dates are entered in the solar (Gregorian) calendar. Year and month boundaries follow seasonal transitions such as the Start of Spring, so a chart month need not change on the first calendar day.
Time is corrected for the birthplace. Longitude and applicable daylight saving time are included. After correction, the date changes at 11 pm. An unknown hour is left blank.
Strength is more than a count of characters. The season, roots and supporting or restraining elements are considered together. A tree in spring and a tree in winter have different conditions. The bar is a reference measure of strength.
Needed roles are then selected. Balance concerns strength, Climate is the birth-month prescription, usually for cold, heat, dryness and moisture, and the Vital Element is the role to use first. Support and Avoid describe what helps or obstructs that role.
The reason for no separate Climate selection also matters. The card distinguishes an adjustment not established by your chart as entered, a needed element already present three or more times among the other stems and the branch main stems, a decision sensitive to birth details, and competing functions. Dry and wet soil, hidden roots and clash contacts are considered separately. A monthly prescription adopted under the chart’s conditions is the Climate element. One not adopted is noted only as a reference.
Conditional effects have a score range. When an incoming influence may both help and burden a needed function, the score is shown as an interval. Having a path to relief does not mean the relief is enough. When ranges overlap, all candidates for the best and worst years or months are shown. A shared chart source is not counted as several independent rescues.
Overlapping roles are read by their jobs. Winter Water may need Fire for warmth, while additional Fire can obstruct another needed job. Warmth and strain are explained separately; this is why Avoid can say Conditional.
The reading follows the calculated result. The engine calculates the chart and decisions; Yong Hae-in explains them. Sources and criteria are listed below.
Yong Hae-in will not curse anyone or wish misfortune on anyone. Requests like that can trip AI safety systems and stop the reading or cause an error. Pouring your heart out is always welcome.
Readings that stop or end in an error because of such requests are not refunded.
Asked an AI about your Saju?
It reads well. The chart underneath may already be wrong.
So K-MUDANG never lets AI do the math
Get the math wrong and nothing else matters. Birthplace longitude, the standard time and daylight saving in force at birth, and the selected time correction can change the hour or day pillar. Even at the same clock time, you have to check which conditions were applied. AI gets this kind of math wrong all the time, and a reading built on the wrong chart still reads smoothly. Nobody notices.
So we split the job in two. A calculation engine, built on the classical rules, works out your chart from your birth city, daylight saving and the solar terms. Yong Hae-in receives the finished chart and writes the reading. She cannot change your chart.
The deeper you go, the more hidden errors an AI reading carries
Plenty of sites say their math is right. But even with the eight characters right, the judgments built on them often slip: which character sits in which position, what each one is to you, how the Vital Element and the ten-year cycles are decided. A reading built on a wrong judgment reads just as smoothly, so the person reading it rarely notices.
Where readings usually slip
Even with the right values, handing them to an AI so it reads them correctly is a craft of its own. List the values loosely and an AI reads them in the wrong positions, or recounts them and gets them wrong. K-MUDANG passes the results in a fixed structure with position names attached (patent pending 10-2026-0053341), and repeats the easily confused values right before the reading is written.
At K-MUDANG the engine makes every one of these calls. Every engine change is run through 23,040 charts in all three language versions to make sure not a single calculation has moved. We have also checked close to 2,000 charts directly against the Saju calendar most widely used in Korea, and the charts we compared line by line matched on the eight characters and on the twelve life stages, combinations, clashes, breaks, harms, resentments and void branches. All 2,424 solar terms from 1899 to 2100 were recalculated from astronomy down to the second. Yong Hae-in receives those values with their position names, reads them and cannot change them, and after each reading its dates and pillars are checked against the engine again. Schools choose the Vital Element differently, so there is no single answer. We judge strength and climate separately and show the reasoning on screen. If you have a reading from somewhere else, start by checking its position names and cycle ages against your chart here.
What makes K-MUDANG different
Also in the app
Saju, also called the Four Pillars of Destiny, turns the year, month, day and hour of your birth into four pillars of eight characters. The balance of the five elements in them (wood, fire, earth, metal and water) describes your temperament, your strengths and the ten-year cycles your luck moves through. K-MUDANG calculates your chart from your birth date, time and city, and Yong Hae-in explains what it means in plain words.
Your chart, Today's Fortune, two months of good dates, the compatibility score and face reading are free. Yong Hae-in's full reading and follow-up questions use credits.
No. Tap "Time unknown" and the reading uses six of the eight characters. The Hour Pillar changes every two hours, so if you know the time, enter the hour and minute.
The year and month pillars change at the solar terms, not on January 1. The Hour Pillar uses the birthplace, historical standard time, daylight saving and selected time correction. Longitude correction leaves out the equation of time. You can choose from 479 cities around the world.
It sets two charts side by side: whether your elements support or strain each other, where your branches combine or clash, and whether each of you carries the element the other needs. Romance, Friend, Business and Family each get their own reading.
She is the voice that writes your reading. The engine calculates your chart first, and she receives only the finished result. She cannot change your chart.
The engine does the math. Yong Hae-in does the reading.
Deleting your account removes your account, Saju profile, readings and remaining credits. This cannot be undone.
Transaction records subject to statutory retention, including contract and payment records, are kept for five years and disconnected from your member account. Usage records are also disconnected from your member account.
Please request any eligible refund before deleting your account. Account deletion does not itself remove statutory refund rights.