What Tew didn’t envision back then was the extent of the mobile-device revolution. “But timing is everything,” he says. When he founded Calm back in 2012, he envisioned it as a website. A year later, the company went mobile with an app. “I actually think it’s one of the reasons Calm is working for a lot of people,” he says. “It’s available on the go, and we always have our phones with us.”