eHarmony uses relationship science to match singles seeking long-term relationships. Its service presents users with compatible matches based on key dimensions of personality that are scientifically proven to predict highly successful long-term relationships. eHarmony has been ranked No. 1 for producing the most marriages and also the lowest divorce rates. On average, 438 people marry every day in the U.S. as a result of being matched on eHarmony, representing nearly 5% of marriages.