- How it worksHow we calculate compatibilityFour factors, their weights, and why we use those four. Everything here is a rule — the same two birth dates always produce the same number.
- PrivacyWhat happens to the dates you enterNothing you type is written down. Here is what that means technically, and what a result link actually carries.
- Paid productsWhat is in the paid reportsThe screen stays as it is; the PDF adds to it. Here is what each page carries, chapter by chapter. Prices and contents are read from the live product settings.
Back to compatibility
How this works
What the number is based on
Every rule we use, written out: the four factors and their weights, the branch relation table, and what happens to the dates you enter.