Two full charts, not two Sun signs
Sign-pair compatibility is a useful conversation starter, but synastry compares the actual planetary degrees in both charts. That is where specific harmonies and friction appear.
Astrology.ac
FREE ASTROLOGY COMPATIBILITY
Compatibility is a pattern, not a soulmate percentage.
Compare two calculated charts across spark, communication, comfort, growth, and chaos—with private, sign-level evidence behind every signal.
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What this tells you—and what it doesn’t.
Loud is not always easy
A tight square can create chemistry, motivation, or recurring conflict. A trine can create ease that is supportive or so automatic it gets overlooked. Context and choices matter.
Consent belongs in the feature
The Orbit Check invite lets the second person enter their own data. The result shares placements and aspects, not exact birth date, time, place, age, or coordinates.
CLEAR ANSWERS
Before you calculate.
Is there one compatibility score?
No. Astrology.ac separates spark, communication, comfort, growth, and chaos because one number hides the pattern and pretends to be more certain than it is.
Does the result change if the people are swapped?
No. The cross-chart aspect calculation is symmetric and tested to produce the same dimension signals in either order.
Can I compare an unknown-time chart?
Yes, with limits. Time-dependent houses and Rising signs are absent, and any planet that could change signs that day is excluded from relationship scoring.
NO MORE GENERIC HOROSCOPES