India, Sept. 12 -- India's passion for celestial bodies goes back thousands of years and, as ancient legends of the land professed and practised the study of stars and planets, it gradually became integral to Hinduism, often blurring the line between astrology and spirituality.

Astrology is crucial to millions in their everyday lives. "Everyone is curious to know what's in the stars. And, they plan their actions based on this reading," said Puneet Gupta, an entrepreneur.

The software engineer wanted to digitally disrupt the world of astrology and spirituality with his startup Astrotalk. It's been seven years, and his brainchild has broken into a business that would run more on word-of-mouth, faith, and customer loyalty than on metrics l...