Frequently asked
questions.

ChatGPT generates text — it doesn't calculate. A Four Pillars chart depends on exact calendar calculation, such as the solar-term boundaries that change the month pillar, and language prediction can get those characters wrong. Our system calculates your chart with a dedicated calendar engine first, then the AI writes its interpretation from that calculated chart and from passages retrieved from classical texts (RAG). The chart is calculated, not generated. The written interpretation is still AI text and can contain mistakes, so treat it as guidance rather than a guarantee.

AI cross-references your life events against classical Four Pillars theory to find the best-fitting interpretation. More history events improve accuracy. Saju analysis is intended as a reflective tool, not a prediction.

Saju is often called Korean fortune telling, but it is more precisely 명리학 — a discipline that reads the flow of energy in your birth chart rather than declaring a fixed future. MUN treats your Four Pillars as a structural map for reflection and timing, so a Saju reading here is closer to studying your own patterns than to having your fortune told.

Not reliably. A ChatGPT Saju reading produces plausible-sounding text, but it routinely miscalculates the 干支 (Heavenly Stems and Earthly Branches) of your birth chart — the foundation every interpretation rests on. MUN builds your Four Pillars with a dedicated calendar engine first, then interprets classical texts via RAG. Accuracy comes from a correct 命式, not confident prose — and we never claim to predict a fixed future.

Your birth date and time are used to calculate your Four Pillars. AI then interprets classical texts to generate a personalized report. Adding life history events enables even more precise analysis.

You can still get a reading. Enter at least 3 life history events, and AI will estimate the most likely birth hour. The more events you provide, the more accurate the estimation becomes.

AI reports combine deterministic chart calculations, published interpretation rules, classical-text retrieval, and an LLM. Reports available through membership draw on the consultation time included with that membership.

History calibration lets you enter real life events (career changes, relationships, health milestones). AI uses these to refine your reading and validate which classical theories best match your actual experience.

Consultation time is measured while AI answers, compatibility analysis, and membership reports are being generated.

Absolutely. AI consultation time packs are available without a subscription and can be used for both AI consultation and compatibility consultation. Adding people and running compatibility is unlimited for every customer.

Membership time resets with its applicable billing window. 10, 30 and 60 minute extensions expire 12 hours after payment; 3, 5 and 10 hour passes last one year from purchase.

Yes. An upgrade charges the higher plan’s full cycle first, starts immediately, and refunds the unused part of the old payment separately on a fixed 30-day basis. Downgrades and billing-interval changes take effect at the next renewal.

A single report can include any 2 to 5 saved or shared birth charts. Your own chart is optional, and a five-person report covers all 10 pairs. A compatibility chat can connect up to 20 people.

Signed-in users can add people or receive shared birth charts without a limit. No separate add-on purchase is required.

Yes. Anyone can subscribe to the free daily fortune email, which sends a deterministic card and summary without AI generation. Active members can also receive a separate AI-written daily push notification.

Yes. MUN is a mobile-first web app — your destiny consultant in your pocket, one line away at any decision.

Membership access continues until the prepaid billing period ends. Independent one-time purchases and existing data remain governed by their own product rights; deleting the account permanently removes the account data.

All personal information is encrypted at rest and in transit, and we never sell it. We do not share it for any purpose beyond running the service and producing your Saju analysis. Doing that requires a small set of named processors under contract (hosting, payment, AI model, analytics), each listed in our Privacy Policy along with what it receives. Birth data and consultation queries sent to the AI provider carry no name or email.