Frequently asked questions

Choose "hour unknown". Most chapters are unaffected; chapters sensitive to the hour are marked "accuracy limited".

An already-unlocked book must be regenerated. Members regenerate at no extra credit cost; credit users spend credits once more.

Different hours mean different pillars. Even with identical pillars, a different birthplace (true solar time) can change the hour pillar.

No. Enter the local date and time at your birthplace and select the actual city. The system handles timezone and true solar time correction. Converting first means the correction happens twice, and the chart will be wrong.

Enter the time shown on the clock; you don't subtract an hour. The system applies historical rules.

Please enter the Gregorian date for now; if you only know the lunar one, convert it with any online tool first.

Casting and date selection share 10 uses for life; AI tools share 3. You then have two options: buy credits (200 per use) or subscribe (5 castings per day, 10 AI tools per month).

No. These are lifetime quotas — when they're gone, they're gone.

No. But the reading window of a report unlocked with credits does (see 14.1).

Membership includes the book, annual book, decade cycles and monthly readings — no credits deducted. Tools only cost credits once your quota is used up.

Yes; cancel any time.

Through your App Store / Google Play purchase history.

Sign in to the same account. If you switched platforms (iOS ↔ Android), subscriptions don't carry over — subscribe again in the other store.

People born on the same day as you. In the past, historical figures; now, people alive today; later, those yet to be born.

Only within the current conversation. Come back later and it's a fresh start; nothing carries over.

By design, not a bug. Each user has one window with Xiao K, and there is no cross-session memory. If you want to continue, finish in one conversation.

Ask Xiao K. It answers from your chart, not with dictionary definitions.

Xiao K guides and accompanies — it helps you think things through. Figure conversations carry that person's temperament and voice: you're talking with them, not asking about them.

No. Two independent systems; content and quota don't interact.

Bottles are anonymous — only your chosen nickname appears, never birth details.

The AI's only job is turning chart structure into plain language. Vague questions ("what should I do") produce empty answers. Give context.

Yes, under Me → Edit profile, once per month.

Within the 7-day cooling-off period, yes. After that, data is permanently deleted.

One.

Bazi (八字, "eight characters") is a Chinese destiny system over 1,000 years old. Your birth year, month, day and hour each map to a pair of characters — a Heavenly Stem and an Earthly Branch — forming four "pillars." Practitioners read the elements and relationships among these eight characters as a portrait of a person and their timing.

The chart is arithmetic, not intuition. Fatecho computes solar terms and calendar conversion astronomically, and applies true solar time correction — which can shift the hour pillar if you were born far from your time zone’s central meridian. Interpretations, by contrast, are readings, not measurements.

Both, honestly. The charting is rigorous; the meaning-making is a tradition, not a science. Fatecho exists for entertainment and self-exploration only — a lens for reflecting on your year and yourself. It is never medical, legal or financial advice.

The hour pillar anchors a quarter of the chart and shifts roughly every two hours. With a known time you get all four pillars; without one, Fatecho charts the year, month and day and marks the hour pillar unknown — you can complete it later in the app.

While subscribed, both the Destiny Book and the Annual Book are free to read, the Annual with no limit. You also get bonus credits (1,200 with the annual plan, 3,000 with the three-year plan), AI dialogue about your chart and deeper daily readings. Cancel anytime.

Yes — the Bazi chart, today’s line and the zodiac reference on this site are free and need no account. The full readings they point to live in the app.

In the app: Me → Settings → Account → Delete account. There is a 7-day cooling-off period after submitting, during which you can withdraw; after that, reports and credits are permanently deleted and your subscription is not cancelled automatically — cancel it in the app store first. See the Privacy Policy for the full picture.

The web tools work worldwide. The app launches first on Google Play, with the App Store following; download links appear on the Store page once live.

Matching isn’t limited to historical figures — stargazers in the app right now who share your birthday are in scope too, and so are those born later. On the rules: most historical records give a date but no hour, so the base match is the same day and month, across centuries — a same-day bond. If the hour is known and matches yours, it becomes a same-hour bond; if all four pillars are identical, a same-chart bond. The app shows which one you’ve found.

One thing: it turns structure the rule engine has already computed into sentences you can read. It doesn’t decide conclusions, and doesn’t add anything the chart doesn’t contain — this is enforced in the system prompt.

Western astrology charts the positions of the sun, moon and planets at your birth. Bazi charts the calendar and solar terms of that same moment — stems, branches, seasons. Different languages, both lenses. What Fatecho adds is precision to the two-hour window, and the people born on your day.

Yes. The constellations are real — Orion's belt, the bowl of the Big Dipper, the W of Cassiopeia — projected at their true relative positions, their brightness following magnitude. The armillary keeps real time too: one sidereal day, 23 hours 56 minutes 4 seconds, a full turn of the sky. The instrument measures the heavens; it does not invent them.