What this site is
SynastryScore is an independent site for comparing two birth charts. It started from a simple frustration: most compatibility tools compare Sun signs and stop there, or lock the actual chart behind a subscription. Here the calculation is the free part. You get both charts, every aspect between them, the house overlays and a score that shows its working, with no account.
What we charge for
One thing: an optional written reading for a specific pair of charts, $9.99 once. It is written with the help of an AI model from the exact chart data, including the transits over the next twelve months, and checked automatically before you see it. It is not reviewed by a human astrologer, and we say so on the page.
How we work
Planet positions come from an open-source astronomical library and are checked against published charts; the details, including how the score is built, are on the methodology page. We don’t sell personal data, and the free calculator runs in your browser without saving the birth details you enter. The privacy policy has the specifics.
A note on what astrology can do
Astrology is a language for describing tendencies, not a science that predicts how a relationship will go. Use the results as a way to talk about each other, and don’t make serious decisions on them.
Contact
Questions, corrections or a reading that went wrong: support@synastryscore.com.