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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.
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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.
Cheonmyeongdang was featured in SaaS (42.5k followers), Artificial Intelligence (471.1k followers) and Lifestyle (1.6k followers) on Product Hunt. Together, these topics include over 149.4k products, making this a competitive space to launch in.
Who hunted Cheonmyeongdang?
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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