Synastry: the astrology between two people
Lay two birth charts together and the relationship comes into view: what draws you in, where you rub, and what the two of you are working on right now.
What Within reads between two charts
- Cross-aspects: how each of your planets meets the other person’s.
- House overlays: which part of your life the other person lights up.
- Composite and Davison charts: the relationship as its own chart.
- Progressed synastry and timeline: how the connection changes, and the dates ahead.
- Vedic kootas: the traditional Indian comparison of two Moon signs, read as themes, never a score.
Free to start · 30 seconds · your chart stays on your phone
Questions
What is a synastry chart?
A synastry chart lays two birth charts over each other to show how two people’s planets interact: where they spark, soothe, challenge and grow each other.
What is a composite chart?
A composite chart blends two charts into one, using the midpoints of each pair of planets. It describes the relationship itself, as its own entity.
Does synastry tell me if we are compatible?
Synastry shows dynamics, not a verdict. Within does not give compatibility scores; it shows where the connection flows, where it asks for work, and what timing is active between you.
Does it work for friends, family and work?
Yes. Synastry describes any relationship. Add as many people as you like; their details stay on your phone.
- Matched against Swiss Ephemeris on 99.97% of checks
- Western and Vedic in one chart, from your exact birth time
- 1,780 reviewed interpretations behind every answer
- Your chart and questions stay on your phone