Numerology is the ancient study of numbers. It's a way to gain insight into your life purpose, strengths, and challenges. Numerology is an ancient science that has been around for thousands of years. It's a way to gain insight into your life purpose, strengths, and challenges. The most popular numerology system is the Numerology Chart. This chart assigns a number to every letter in the alphabet and then associates those numbers with different aspects of human life such as personality traits or challenges.