Compatibility system
Synastry Chart Calculator
Synastry is the Western astrology of relationships: it lays two birth charts over each other and reads how one person planets land on the other.
How imotionengine reads it
imotionengine cross-aspects all ten planets sorted by orb tightness, then surfaces Chiron synastry, Lunar Node contacts, the Vertex, and house overlays. Your free reading shows your planets landing in theirs, and the full reading on the dashboard completes the mirror direction.
Seven readings, one verdict
Western synastry, Vedic, Chinese, Mayan, numerology, biorhythm, and the Zumi archetype all run against the same birth data at once, then combine into one honest verdict that no single reading can flatter.
Common questions
- What is a synastry chart?
- A synastry chart overlays two birth charts and reads the aspects between them, showing where two people harmonise, challenge, and grow each other.
- Do I need exact birth times for synastry?
- Birth times sharpen the houses and the Moon, but the calculator still returns a meaningful planet-to-planet reading without them.
Read this system alongside six others, free, from two birth dates.
Start a free compatibility reading