In short
Select five personal placements for each person. The tool compares same-sign matches, shared elements and shared modalities, then points to the placements worth discussing.
Select five placements for each person
How to compare the five personal placements
Matches in sign, element and modality
This is a placement comparison, not degree-based synastry. Full synastry also uses exact aspects, houses and chart angles, so the result is a structured starting point rather than a score.
Use the same zodiac framework for both people. Compare the Moon for emotional habits, Mercury for communication, Venus for values and Mars for assertion. Then read the complete aspect guide before drawing conclusions.
Five placements are not full synastry
Calculated positions are astronomical data. Astrological meanings are a symbolic tradition, not scientific predictions or professional advice.