Every matchmaking approach makes an implicit bet on what actually predicts compatibility. Horoscope-based apps bet on birth dates. We bet on decades of peer-reviewed relationship psychology instead, and it's worth explaining why plainly, rather than just asserting it.
This has been tested, more than once, at real scale. One of the largest studies ever conducted on the question came from David Voas at the University of Manchester, who examined census data covering 20 million married couples in England and Wales specifically to test whether star-sign compatibility shows up in real marriage patterns. It didn't: no meaningful pattern linking sign pairings to who actually ends up married to whom.
That doesn't make astrology meaningless as a cultural or reflective practice for people who enjoy it. It just means it hasn't demonstrated real predictive power over relationship outcomes, which matters a lot if the whole point of the exercise is helping you find someone you're actually compatible with.
Four things, specifically, and they're exactly what our assessment measures:
Personality: measured via the Big Five Inventory, developed by Oliver John, Eileen Donahue, and Robert Kentle in 1991. A 2010 study by Dyrenforth, Kashy, Donnellan, and Lucas tracked over 20,000 couples across Australia, the UK, and Germany, and found personality traits like agreeableness and conscientiousness consistently predicted relationship satisfaction.
Attachment style: measured via the ECR-S scale. We wrote a full post on what this actually means and why it matters.
Parenting and family values: rooted in Diana Baumrind's foundational 1971 research on parenting styles, which shapes how people approach both their own relationships and eventual parenting decisions.
How these combine: research by Gonzaga, Campos, and Bradbury (2007) found that compatibility across someone's whole profile, not any single trait in isolation, is what actually correlates with relationship satisfaction. That's why we don't just spit out a single score off one dimension.
We don't expect anyone to just take our word for it. Every claim above is cited, with the actual researchers credited, on our Case Studies page.
See what psychology-based matching actually finds for you.
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