Silver Lake, a private equity firm, led a $540m funding round in Noom, a developer of mobile application, valuing the company at $3.7bn. The round was joined by Oak HC/FT and Novo Holdings. The company has met with potential advisers to discuss an IPO that could happen this year or early next year. Noom is aiming to be valued at around $10bn when it goes public depending on market conditions, the people said.