Compatibility
Compare two charts, with consent.
A synastry chart reading lays two birth charts over each other to read how two people actually fit — attraction, friction, communication, and timing. It's the real structure beneath chemistry, not a sun-sign meme.
Sun-sign matching asks one question. Synastry asks hundreds: how your Moons meet, where Venus and Mars spark or grate, which planets ease communication and which create tension. It's a far more honest read of a relationship.
In Shymea, compatibility is consent-based: both people approve before a single chart detail is compared. Nobody is analyzed secretly.
What synastry reveals
Attraction and chemistry
How Venus and Mars between two charts shape desire, warmth, and the pull toward each other.
Emotional connection
Moon-to-Moon and Moon-to-planet contacts that show how you comfort — or unsettle — one another.
Communication and friction
Mercury, Saturn, and the aspects that smooth conversation or create recurring tension.
The long arc
Where the bond is built to grow, and the patterns worth handling with care over time.
The composite chart
The midpoint chart of the two nativities — a single chart standing for the relationship itself rather than for either person, read for what the bond is trying to become.
Midpoints and the Davison
Midpoints show where two charts meet at a point neither planet occupies. The Davison relationship chart takes the midpoint in time and space instead, producing a real chart for a real moment.
How to read a synastry chart
Read it in four passes, in this order. First, the luminaries and angles: Sun, Moon, Ascendant and Descendant contacts between the charts carry more weight than anything else, because they describe identity, need and the way each person meets the other.
Second, Venus and Mars — attraction, appetite and how conflict is handled. Third, Mercury and Saturn, which govern whether you can talk to each other and where the bond meets its limits and its durability. Only then, fourth, read the house overlays: whose planets fall in whose houses, which shows the area of life each person activates in the other.
Work with tight orbs before wide ones. A Moon conjunct Moon within one degree tells you more than a dozen aspects at seven. And read the whole picture before judging any single contact: a hard Saturn aspect in a chart otherwise full of easy Moon and Venus contacts means something different from the same aspect standing alone.
In Shymea, start by calculating each person's free birth chart. For a deeper read, a Synastry Compatibility report compares two full charts aspect by aspect — including the composite — and explains what it means in plain language, delivered as a PDF.
Related
- Calculate your free birth chart
- Get the Synastry Compatibility report
- Read: what is synastry, and how to read a synastry chart
- Read: Moon sign compatibility
- Aspects explained: angles, orbs, applying vs separating
- Read: composite charts, the blueprint of a relationship
- Ask the AI about a specific contact in your chart
- Ask a relationship question as horary instead
Common questions
- What's the difference between synastry and a composite chart?
- Synastry overlays two separate charts and reads the contacts between them — 10 bodies against 10 gives 100 possible cross-aspects before houses are counted. A composite merges the two into a single chart representing the relationship itself. Shymea produces both, and only with both people's consent.
- Do I need my partner's exact birth time?
- An exact time gives the fullest read (houses and Rising depend on it), but you can still get a meaningful comparison with an approximate time.
- Is the comparison private?
- Yes. Compatibility requires explicit consent from both people before any chart detail is compared — nobody is analyzed without approval.
- Can astrology tell me if a relationship will last?
- No — and we won't claim to. Synastry highlights patterns, strengths, and friction points that invite reflection. Outcomes are yours to shape.
- How do you read a synastry chart, step by step?
- Read in four passes. Start with the luminaries and angles — Sun, Moon, Ascendant and Descendant contacts, which outweigh everything else. Then Venus and Mars for attraction and conflict. Then Mercury and Saturn for communication and durability. Finally the house overlays, which show what area of life each person activates in the other. Work from tight orbs outward, and judge the whole pattern rather than any single aspect.
- What is a composite chart?
- A composite is built from the midpoints between two charts — the midpoint of the two Suns becomes the composite Sun, and so on. The result is one chart that stands for the relationship itself rather than for either person. It is read like a natal chart, but the subject is the bond.
- What is a Davison chart, and how is it different from a composite?
- A composite averages positions mathematically, so it is not a chart of any real moment. A Davison takes the midpoint in time and in space — the halfway date between two birthdays, at the geographic midpoint — and casts a genuine chart for that moment. Astrologers who want a real sky rather than an averaged one prefer the Davison.
- What are midpoints in astrology?
- A midpoint is the degree exactly halfway between two planets. Planets sitting on that degree are read as combining the two, even though no traditional aspect connects them. In synastry, midpoints catch contacts that an aspect-only reading misses — which is why composite charts, built entirely from midpoints, work at all.
- Which matters more, synastry or the composite?
- They answer different questions. Synastry describes how two people experience each other — the friction, the pull, the daily texture. The composite describes what the relationship is as a thing in its own right, including where it is heading. A full reading uses both, and Shymea's report covers both.
Shymea is for guidance, self-reflection, and entertainment — not a substitute for professional medical, financial, legal, or psychological advice.