I Built a Tool for Reading Your Own BaZi Chart — Chinese Astrology, Calculated Properly

Hi all,

Plenty of Chinese-Australian families still check the almanac before locking in a wedding date. Someone will look at a chart before a baby gets named. Picking a day to move house, open a shop, sign a contract — there'll usually be an opinion in the family about which day is the better one.

The part I find interesting is that people who don't believe any of it join in anyway. It's less a matter of faith than a shared vocabulary that's been in circulation for over a thousand years and never quite went away.

What tends to get lost is that underneath the vocabulary sits an actual system. BaZi — the Four Pillars — takes a birth date, time and place and derives a fixed structure from it. The derivation has strict rules. It isn't a mood.

For most of its history, though, reading that structure meant finding someone who could do it for you, and taking their word for it. That's the part I wanted to change.

So I built FateMaster: https://www.fatemaster.ai

The chart is calculated, not written

A deterministic engine derives the pillars — the same way the tradition does, and the same way every time. Your birth time is corrected to true solar time using your birth coordinates, which matters more than it sounds: if you were born anywhere away from your time zone's meridian and near an hour boundary, the uncorrected time puts you on the wrong pillar and everything downstream is wrong with it. Most free calculators skip this.

The language model never touches that part. It only explains a result it wasn't allowed to invent. Enter the same details twice and you get the same chart; what changes between readings is the reading, not the astronomy.

You get the reasoning, not a verdict

This is the bit I actually care about. A consultation gives you a conclusion and you either accept it or you don't — the working stays with the person you paid. Here the structure is on screen and the explanation walks through it: which element dominates, where the clashes are, what the luck cycles do over time. The goal is that you end up able to read it yourself, not that you keep coming back.

If you want to go further, describe an actual situation and an agent works out what the question calls for — a birth chart when you're asking about the shape of a life, an I Ching hexagram when you're asking about one thing in front of you — then runs that calculation and reasons from the result. If it's missing something it needs, it asks instead of guessing.

Where I'll be straight about it

The calculation is deterministic and I'll defend it line by line. The interpretation is not science and I'm not going to dress it up as prophecy.

A thousand-year-old system deserves to be handled rationally: no superstition, nothing deified. What you make of the reading is yours to decide — and if you think the whole field is nonsense, that's a perfectly reasonable position that this won't change.

Practical bits

  • Runs in the browser, no app
  • English, 简体中文, 繁體中文, 日本語, 한국어
  • There's a paid tier for the deeper luck-timing analysis and the agent. Casting a chart and reading what it means is the part most people will ever use

Niche one for OzBargain, I know — but it's a big community here and this comes up around Lunar New Year, weddings and new babies. Happy to answer anything about how the calculations work. That part I can defend line by line.

Cheers.

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Comments

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  • Oh, for real? Do people just look up “good website to advertise my AI vibe coded shit?” And Google just spits out “OzBargain”?

    • Is Ozbargain a good place to advertise my vibe coded website?

      No, OzBargain is generally an exceptionally hostile place to advertise a "vibe coded" website.While the platform boasts massive traffic of over 3 million unique monthly visitors, its user base is fiercely tech-savvy, highly cynical of low-effort projects, and tightly bound by rigid anti-spam rules.

      • Clearly AI generated. No human would write such a positive paragraph.

      • and tightly bound by rigid anti-spam rules.

        Doubt.

    • What you make of the reading is yours to decide — and if you think the whole field is nonsense

      I think your whole app is nonsense

  • There really should be a ban on new members who join purely to promote their vibe-coded website. Like the Classifieds, it should be a minimum of a year before they can post such websites.

    • Or at least voting on forum topics so ragebait like this doesn't end up on front page from people commenting

    • Working on a solution. Just waiting for chrome and Firefox extension stores to approve it

  • As a Chinese Australian let me recommend dumpster diving as a better way of getting a load of rubbish.

  • Sir this is a bargain website

  • It "properly calculates" made up nonsense?

    • Only if you pay $15/day or $299/year for said made-up nonsense.

      • I'd pay $413/year for basic plus $7 for premium.

  • Fake Feng Shui

  • I was really hoping for a feng shui app to help me arrange the new furniture in my lounge room

    • Don’t tempt op

    • Have you thought about getting a rug? It really ties the room together.

      • The Dude abides

  • Astrology ….. "calculated properly"

    Haven't laughed so hard in months, thanks.

  • How's this better than a prompt with ChatGPT?

    • It is a pretty interface to put your prompts to AI. Really need some filters to get rid of these garbage posts.

      • Did you really just reply to someone questioning why this is better than an AI prompt with……..an AI response?

        I'm actually amazed. So many people think that being the meat proxy for an LLM provides any real value to anyone.

  • Any days I should keep an eye on for bargains

  • OP must not use whatever this is he is promoting or it would have told him that this was definitely not the right date to launch it on this platform.

  • This isn't a tool, it's a bargain.

  • I was gonna vibe code an app for bargains on spaghetti monster and/or unicorns.

    Are you saying I might be wasting my time? Damn. I was gonna be rich and famous.

    • There is a endless market for preying on peoples various worshipping habits. It definitely can be a good get rich quick avenue if you find the right buttons, certainly has worked well for most religions.

    • bargains on spaghetti monster

      Ragu be upon you

  • I'm glad this is vibe coded, I couldn't stand the idea of anyone spending significant time and effort on something so pointless.

    • Just think, today a ~$900 RX 9700 "deal" was posted so someone could vibe code up this junk.

  • Hey ChatGPT, what's a good site to spam the millionth slop-coded app no one asked for?

    Ozbargain? Never heard of it, but thanks, I'll sign up now. I bet they'll LOVE this and NOBODY has tried it before with a million other useless apps which also probably have huge security vulnerabilities.

  • It may be nonsense, but it's no worse than any other religious nonsense that guides the lives of three-quarters of the world's population and consumes around 50% of their cognitive resources.

    • True, but I hope the other religious nonsense is also not published here as vibe coded apps and sudo free advertising. You can believe in whatever spaghetti monster or unicorn you like, but don't shove it in our faces.

      • They should all aloo have zero special protections.

    • I don't think that this is actually a religion.

  • slop

  • Smart phones. Stupid people.

  • ohh no HWGA

    • The forum crowd don't visit the deals section often. Vibe code a bible app and expect the same response

      • Vibe coding something that generates fake Bible quotes could be interesting. Bible according to ChatGPT.

    • I crap on all of it if that helps you sleep tonight.

    • Do please point to literally ONE "bible post" being upvoted

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