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Cheonmyeongdang
Korean Saju AI in 9 languages. Free chart draw.
Korean Saju AI in 9 languages. Free chart draw + pad deep readings. 4-pillar Korean astrology - 207M unque combinations (vs Western astrology's 1,728). Clade-powered explanations a grandmother AND a middle shooler both understand. KO/EN/JP/ZH/PT-BR/ES/ID/VN/H. Korean cards (KG Inicis V2) + Global PayPal. $1.10Daily / $7.20 Monthly.
Cheonmyeongdang is a Korean Saju (사주, four pillars of destiny) AI that draws your birth chart and reads it in 9 languages — English, Japanese, Chinese, Korean, Spanish, Portuguese, Indonesian, Vietnamese, and Hindi.
I'm a solo founder (Korea, 1-person company). Built this because every astrology app out there is Western. Saju is 4,000 years old and nobody outside Korea/China can use it without learning Korean. So I wired Solar→Lunar calendar conversion, true solar time, 24 jieqi solar terms, the whole stack, plus a GPT-style AI consultant on top.
What's free:
- Birth chart drawing (10 pillars, hidden stems, all of it)
- Compatibility (궁합) preview
- Daily fortune
What's paid:
- Daily pass ₩1,500 (≈$1) — unlimited AI consult for 24h
- Monthly ₩29,900 (≈$22)
- Annual ₩287,040 (≈$211, ~20% off)
Currently live in web (sajuapp.app) + Android (Play Store), iOS in review.
One thing I'd love feedback on: the AI consultant tone. I made it conversational on purpose because traditional Saju readings are dense and intimidating. Did it land for non-Korean users? Anything confusing?
Thanks for checking it out 🙏 happy to answer anything.
— Hongdeokhun (홍덕훈), Founder
About Cheonmyeongdang on Product Hunt
“Korean Saju AI in 9 languages. Free chart draw.”
Cheonmyeongdang was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #66 on the daily leaderboard. Korean Saju AI in 9 languages. Free chart draw + pad deep readings. 4-pillar Korean astrology - 207M unque combinations (vs Western astrology's 1,728). Clade-powered explanations a grandmother AND a middle shooler both understand. KO/EN/JP/ZH/PT-BR/ES/ID/VN/H. Korean cards (KG Inicis V2) + Global PayPal. $1.10Daily / $7.20 Monthly.
On the analytics side, Cheonmyeongdang competes within SaaS, Artificial Intelligence and Lifestyle — topics that collectively have 515.2k followers on Product Hunt. The dashboard above tracks how Cheonmyeongdang performed against the three products that launched closest to it on the same day.
Who hunted Cheonmyeongdang?
Cheonmyeongdang was hunted by 덕훈 홍. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Cheonmyeongdang including community comment highlights and product details, visit the product overview.
덕훈 홍
Hey Product Hunt 👋
Cheonmyeongdang is a Korean Saju (사주, four pillars of destiny) AI that draws your birth chart and reads it in 9 languages — English, Japanese, Chinese, Korean, Spanish, Portuguese, Indonesian, Vietnamese, and Hindi.
I'm a solo founder (Korea, 1-person company). Built this because every astrology app out there is Western. Saju is 4,000 years old and nobody outside Korea/China can use it without learning Korean. So I wired Solar→Lunar calendar conversion, true solar time, 24 jieqi solar terms, the whole stack, plus a GPT-style AI consultant on top.
What's free:
- Birth chart drawing (10 pillars, hidden stems, all of it)
- Compatibility (궁합) preview
- Daily fortune
What's paid:
- Daily pass ₩1,500 (≈$1) — unlimited AI consult for 24h
- Monthly ₩29,900 (≈$22)
- Annual ₩287,040 (≈$211, ~20% off)
Currently live in web (sajuapp.app) + Android (Play Store), iOS in review.
One thing I'd love feedback on: the AI consultant tone. I made it conversational on purpose because traditional Saju readings are dense and intimidating. Did it land for non-Korean users? Anything confusing?
Thanks for checking it out 🙏 happy to answer anything.
— Hongdeokhun (홍덕훈), Founder