How to Use AstroSanmei
Explore 3,000 years of history through the lens of Sanmeigaku. Here's how to get the most out of the app.
Your Daily Dashboard
The Home screen gives you everything you need at a glance โ today's fortune, the next significant moon phase, and the exact time of your next fortune shift (solar term boundary).
Moon Phases
The nearest new moon, first quarter, full moon, or last quarter with exact date and time.
Today's Fortune
Your daily cosmic outlook โ updated automatically at each fortune shift.
Fortune Shift Time
Know exactly when your daily fortune updates. Precision down to the minute.
Your Profile & Cosmic Blueprint
Enter your date of birth โ that's all you need. No gender, no birth time. The app reveals your archetype, Spirit/Body Balance, Leader Stars, and more.
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Spirit / Body Balance
Superhuman? Spirit? Find out.
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Leader Stars
0โ3 stars of leadership power.
Your profile also includes an Instagram Story share feature โ generate a beautiful share image with one tap.
Discover Who You Resemble
The app matches your Sanmeigaku chart against 210+ historical figures and shows your Top 5 most similar characters, split between samurai warlords and world history exchange students.
Your Action Range diagram shows the balance between four life dimensions: Stability, Creativity, Action, and Intellect. The shape reveals whether you're a specialist or a generalist.
The developer's story: AstroSanmei's creator โ a computational physics PhD โ was matched with Johannes Kepler, the court astronomer who mathematically described planetary orbits. A physicist building an astrology app, matched with history's greatest astronomer-astrologer.
Share image generated from the app โ shareable on Instagram Stories
Compatibility Diagnosis
Check compatibility across romance, work, and friendship. The app analyzes the cosmic profiles of any two characters โ including ones you add yourself.
Sanmeigaku didn't know their history. It still got it right.
Oda Nobunaga ร Toyotomi Hideyoshi
The app reads them as the ultimate partnership. History confirms it: Hideyoshi was Nobunaga's most trusted general and inherited the mission of unifying Japan.
Akechi Mitsuhide ร Oda Nobunaga
"Your Roots pull in opposite directions." "Arguments happen, but that's because you both care." Both carry โ โ Leader Stars โ two leaders in one orbit. The Honnล-ji Incident was, cosmically speaking, written in the stars.
Confucius ร Qin Shi Huang
The founder of Confucianism and the emperor who burned Confucian texts โ sworn enemies in history, yet Sanmeigaku reads them as the perfect match. Perhaps the deepest conflicts arise between those most deeply connected.
Fan of Kingdom? Check your compatibility with Qin Shi Huang โ the app covers anyone born from 601 BCE onward.
Weekly Power Forecast
Add up to 5 favorite characters and see your weekly fortune side by side. The forecast highlights:
Triple Harmony โ the most powerful days.
Dual Harmony โ strong energy days.
"You" = your partner's peak day, "Two" = best day to act together.
Character Library
Browse 210+ characters, filter by warlords or exchange students, and sort by Spirit/Body Balance, Leader Stars, or birth date. You can also browse the library on this website.
Spirit โ Physical
Physical โ Spirit
Leader Stars (Warlords)
Birth Date (Exchange)
Joan of Arc โ Spirit. Heard voices from God. Einstein โ Spiritual, Theory Smasher. Rewrote physics with thought alone. Caesar โ Superhuman, Network Heart. Crossed the Rubicon and reshaped the world. Nobunaga โ Physical. Mitsuhide โ Spirit. Two โ โ leaders pulling in opposite directions โ the Honnล-ji Incident, written in the stars.
Search by Name
Tap the Search button to find characters by name. Results appear instantly as you type, showing similarity scores and archetypes. Tap any result to view the full character profile.
Marie Antoinette โ Aesthetic Connector, Spirit-Leaning 183, Student Council
Add Characters & Share
Add anyone by entering their date of birth โ friends, family, or historical figures you're curious about. They receive a full Sanmeigaku reading and can be used in compatibility checks.
Generate shareable images for Instagram Stories, TikTok, or any platform. When multiple characters have the same similarity score, you can choose which ones appear in your share image.
Show the world who you resemble, your compatibility results, and your cosmic profile.