What is OQi?

In one line

Based on your birth date, OQi explores your main temperament and the flow of your fortune as hypotheses, and gives you a key element that energizes you (a Five-Element booster card) — an AI saju self-exploration tool.

The 4 values OQi pursues

1. Self-exploration, not prophecy —What matters is not whether it was right, but whether it made you think.
2. Strengthening strengths, not fixing weaknesses — It doesn't poke at lack — it helps you discover assets you already have.
3. A conversation, not a one-way verdict — It offers hypotheses so you can compare them with your own experience.
4. Gradual self-disclosure —It starts from your birth date, and you add more information voluntarily.

How is it different from other saju services?

• It doesn’t pin down your future or fate. It conveys your present temperament and strengths clearly, and the flow of fortune as possibility.
• It avoids a deficit frame. Instead of calling something a weakness, it describes "energy flowing in a different direction."
• It translates saju terms into everyday language . Unfamiliar terms are unpacked into everyday expressions or annotated in parentheses.
• A 5-part structure presents your results — innate energy → possibilities → saju composition → self-check → next steps.

How to use

1. Choose between solar and lunar calendar
2. Enter birth date, birth time (optional), and gender
3. Start analysis → 5-part result + booster card in about 15 seconds
4. Compare the result with your own experience, and save or share the booster card

Data & technology

• Solar/lunar and solar-term data: Korea Astronomy and Space Science Institute (KASI) lunar-solar conversion data (KOGL Type 1)
• Manseryeok library: @fullstackfamily/manseryeok v1.0.8 (MIT license)
• Natural-language interpretation: Anthropic Claude Haiku 4.5 — ethical guardrails built into the system prompt
• Supports people born 1900–2050

Who made it

This is the first service built by a data analyst of 10 years while turning into a solo company. It began with the question, "Could there be a tool that helps you understand yourself more deeply without fixing your fate?"

Limitations

OQi's saju information is for reference only and its accuracy is not guaranteed. For decisions about medical, legal, or financial matters, please consult a relevant professional. For details, see the Terms of Service and Privacy Policy.