Panorama
From 原局 × 大運 through 歲運, 月運, 日辰 and 時辰, a whole life laid out as one time × domain mesh.
GGM Labs · Z60 Tertius Interveniens
Saju: Four Pillars of Destiny (BaZi) as engineering.
Z60 Tertius Interveniens is a professional Saju spectrum that turns the rules written in 『子平眞詮』, 『滴天髓闡微』, 『窮通寶鑑』, 『三命通會』 and 『淵海子平』, checked against the original texts, into calculation rules. Laying 大運, 歲運 and 月運 on the 原局 layer by layer, it shows the flow of luck as values and pictures.
Z60 Tertius InterveniensAndroid · Windows · Free download (Lifetime pass as an in-app purchase)
Search “Z60” in the store · free download
What it calculates
All calculation happens on the device. The screens show states; they do not judge good or bad, and the evaluation is left to you.
Terrain view
Turn the heights of 大運 and 歲運 in 3D and see at a glance where you are now.
身強弱 and 成敗
衰旺 measured by adding luck to the 原局 layer by layer, and the 成敗救應 of 『子平眞詮』 judged in a chain from 大運 to 歲運 to 月運. Switch 刑沖會合 on and off and compare the values.
Preservation chain
On the state the earlier 大運 left behind, it reads how far this 大運 and 歲運 depart from it.
Family 宮合 · fusion response
How well the relation between two people is preserved and how strongly the other's energy comes in, drawn layer by layer as a pull toward 中和 or away from it.
AI fortune-reading prompt
Copy a code holding the values and the reading rules and paste it into a chat AI: it reads the same values the same way, adding no meaning outside the rules. The app only copies the code to your clipboard.
Classical texts
Every rule cites the passage it rests on
- 格局, 用神 · 相神 and 成敗救應 — 『子平眞詮』
- 衰旺, 中和 and forms such as 從象 · 化象 — 『滴天髓闡微』
- 調候用神 by season, 120 cells — 『窮通寶鑑』
- Conditions of 外格 — set by comparing four classics, centred on 『三命通會』 and 『淵海子平』
- 神殺 are left out of the judgment, following 論星辰無關格局 in 『子平眞詮』
Z60 engine
Counting on the mathematical structure of the sixty 甲子
- The sixty 甲子 are the 60 pairs of ℤ₁₀ × ℤ₁₂ whose stem and branch share parity — the same structure as the ring ℤ₆₀.
- When force moves, its total is preserved; when 沖 or 克 cuts it, the strength saturates, so the cut never exceeds 90% in total.
- The same rules apply again at each lower layer, with the weight reduced to 2/3.
- The attribution of 大運 and the preservation of relations were designed first with category theory.
Free edition and Lifetime pass
The app is free to download and use. A one-time Lifetime pass opens the full analysis on the same screens, and your saved charts carry over.
Free
Calendar and saved charts
- The four pillars, 十星 and 支藏干
- Stems and branches unfolding from 大運 to 歲運 and 月運
- Lunar–solar conversion (KASI lunar tables), 節入 and daylight-saving notes
- Save up to 20 charts and load them
Lifetime pass · one purchase
The full analysis
- 格 and 身強弱 scores, natal grade, the 成敗 judgment chain
- 調候用神, 得令 and direction; 刑沖會合, stem combinations and 化
- Preservation chain, family relation layers, fusion response, 外格 reference
- Panorama and terrain views, the Lab (運形 · 調候形 · 物象 cards)
- AI fortune-reading prompts, unlimited saved charts, Google Drive cloud save
Neither belief nor dismissal — testing
The name Tertius Interveniens (“the third man intervening”) comes from the title of a book Johannes Kepler published in 1610. Z60 neither accepts classical Saju as a creed nor throws it away as superstition. It turns the rules of the classics into calculation, judges each hypothesis in pre-registered experiments, and records the results as they are in the experiment log at the bottom of the app. Hypotheses that did not hold are kept, with their defining formulas, so they can be run again.
GGM Labs
GGM Labs is a software studio run by the developer who created the philosophical system GGM (Generative General Methodology). It builds tools that turn rules written in classical texts into computable structures and test the results in pre-registered experiments.
No personal data is collected. The birth data you enter and the charts you save stay on your device; if you turn on cloud save with the Lifetime pass, they go only to the app-only folder of your own Google Drive. Nothing is sent to a developer server, and there are no ads or usage analytics. See the privacy policy for details.
ProductZ60 Tertius Interveniens — Google Play · Microsoft Store
Patent · trademarkKorean patent applications 10-2026-0193197 · 10-2026-0197960 (examination requested) · trademark application 40-2026-0207869
Contact[email protected]