Astrology compatibility tests are often used to determine how well two people might align based on their astrological signs. While these tests can be fun and offer some insight into relationship dynamics, they are typically not found in psychological science. However, many popular tests combine astrology with principles of numerology and use long-established systems, which rely on life path numbers and other numerological principles to assess compatibility. 

An astrology compatibility test combines elements of astrology and numerology, tested over years, and claims to give an accurate picture of compatibility based on these traditional systems​. These tests provide insights into the dynamics of emotional and intellectual connections, but ultimately, the success of a relationship depends on communication, effort, and mutual respect between partners.