HOW YEORI CALCULATES
Engines produce the root values. AI narrates them.
Yeori AI separates calculations from AI-generated explanations. This page describes the current boundaries and limitations reflected in our code and policies.
Calculation and narration separatedWhat “accuracy” means here
Deterministic calculations are tested to return the same root values for the same input. Fortune interpretation remains reference and entertainment content based on traditional systems; it is not scientific fact or a guaranteed prediction of the future.
From Saju calculation to an answer
manseryeok is the single source for Saju pillars
Year, month, day and hour pillars and luck pillars come from manseryeok. Other libraries do not recalculate those pillars from the birth date at solar-term boundaries.
A rules engine derives Myeongni root values
The confirmed pillars are injected into a rules engine for elements, Ten Gods, gyeokguk, yongsin and sinsal. A yongsin result is shown with the methodology or school used.
Each selected tool creates FortuneChart.facts
Tools expose their calculation method and produce structured facts. Values that cannot be calculated, such as time-sensitive values without a birth time, are marked as estimated or omitted.
AI explains the supplied facts
AI input contains the current question, up to 12 earlier messages from the same conversation, the selected self-profile display name, and the selected response language, tone, and tools. When a compatibility tool is selected, its chart also contains the compatibility partner profile display name. Every chart includes its summary and computed facts, plus methodLabel when a calculation methodology is available. Add another person’s profile only with their permission and use only the minimum necessary information. The model also receives state flags for the last or low-credit range, first chat after a purchase, whether the profile is missing, whether the casting is new, and whether a surprise insight is enabled. These are state flags, not the balance amount, purchase amount, or card details. A separate request for follow-up suggestions contains the current question and up to the first 1,500 characters of the latest AI answer. Prompt constraints apply to all AI narration; only some tool claims are checked against facts after generation—currently Yukhyo line facts. These controls cannot guarantee error-free output.
Privacy and data sent for AI narration
The LLM disclosure manifest is in draft status. The active provider, destination countries, legal basis, and retention details are not approved or policy-published, so the production gate remains blocked. Our Privacy Policy describes the data scope and possible LLM provider selection logic currently reflected in the service. The narration request contains the current question, up to 12 earlier messages from the same conversation, the selected self-profile display name, and the selected response language, tone, and tools. Compatibility charts also contain the compatibility partner profile display name. Each chart contains methodLabel when a calculation methodology is available, plus summary and computed facts. Add another person’s profile only with their permission and use only the minimum necessary information. State flags indicate the last or low-credit range, first chat after a purchase, whether the profile is missing, whether the casting is new, and whether a surprise insight is enabled; they are not the balance amount, purchase amount, or card details. A separate request for follow-up suggestions contains the current question and up to the first 1,500 characters of the latest AI answer.
Signed-in members can export their data or delete their account from Settings.Not a substitute for professional advice
Readings do not replace medical, legal, financial, investment or emergency advice. Use qualified professionals and the facts of your situation for important decisions.
We do not treat fear-based certainty or fake urgency as a trust mechanism.Payment and refund boundaries
Paid checkout is handled by Polar as Merchant of Record. Free promotional credits are not refundable. Requests for paid credits are handled under applicable law and our Terms, based on the unused amount or unused remaining balance.
The Terms and Polar process govern the actual refund.Policies and contact
For the full wording, use the currently available pages below.
A separate support hub is not available yet. Send unresolved questions to contact@ecarbon.kr.