A reading
that isn’t made up
Saju apps show only tables; AI fortune-telling says something different each time.
At Sajudang, the engine judges and AI only explains.
The problem we solve
“Sounds plausible — but can I trust it?”
Ask an AI about your saju and the prose is smooth — but ask again with the same chart and the answer changes, with no way to check where the judgment came from. Manseryeok apps, by contrast, are accurate but just hand you a table without telling you what it means.
Accurate calculation and clear explanation should come together. This service is the bridge between them.
How it works
computed in code, with no human or AI intervention
no inventing verdicts · only auto-reviewed output is shown
What’s different
| AI saju | Manseryeok app | Sajudang | |
|---|---|---|---|
| Source of judgment | A language model generates text | Tables only, no interpretation | A myeongni rule engine computes |
| Re-entering the same question | Answer changes each time | Identical | Identical (deterministic) |
| Checking the basis | Not possible | The table is the basis | Basis shown per statement |
| Friendliness of explanation | High | None | High (AI writes it out) |
Validation
Charts whose verdicts are recorded in the classics are registered as test cases, and re-scored every time an engine rule changes. If a build fails the bar, it does not ship.
Products
Only what you’re curious about, only what you need
The chart, personality reading, daily fortune, and Manseryeok tool are free—no sign-up required.
FAQ
Is this an AI that reads your saju?
No. The judgments (strength, structure, Yongshin, combinations, luck cycles) are computed by an engine that ports classical myeongni into code. AI only turns those results into readable prose, and a review layer keeps it from inventing anything the engine didn’t conclude.
How do you validate accuracy?
We register charts whose verdicts are stated in the classics as test cases and score them. Currently, across 22 charts—including 11 from Ziping Zhenquan—the strength, structure, and Yongshin verdicts match 100%. This scorecard is re-run every time an engine rule changes.
Will the same chart give the same answer?
The judgment is always the same. The wording of the explanation may vary, but conclusions like the strength score, structure, and Yongshin do not change.
Can I get a reading without my birth time?
Yes. We judge from the other three pillars, excluding the hour pillar, and flag any item that genuinely needs the time.
What do you avoid?
We don’t diagnose disease, pronounce on lifespan, recommend investments, or stoke fear. We don’t hide negative findings either—but we always pair them with a way to handle them.
What will my chart say?
The chart and personality reading are free.
Readings here are for reference and entertainment. They don’t replace medical, legal, or investment judgment.