Healthify, the health tech startup, has secured $20 million funding led by Khosla Ventures and LeapFrog Investments.The funds will be used for international growth, particularly in the US, and to enhance its artificial intelligence capabilities.Healthify is the world's largest AI-powered health and fitness app, aiming to improve the lives of one billion people.The focus will be on building a strong team in the US and expanding the development center in Bangalore for the US market.