Similarweb built a business by measuring what companies cannot see in their own analytics: everyone else. Now it is turning that outside-in view of the internet into fuel for marketers, investors, retailers and AI agents.
Apptopia is a Boston-based mobile app intelligence company that turns billions of app performance signals into investor-grade data. Using machine learning and a real-user device panel of 15M+ devices, it estimates downloads, revenue, usage and engagement across thousands of public and private apps, then packages those signals for institutional investors, brands and publishers. More than 200 financial firms use Apptopia to read consumer behavior ahead of earnings, and its metrics are distributed through the Bloomberg Terminal.
Jonathan Kay is the co-founder and CEO of Apptopia, a Boston-based app intelligence company that turns mobile app data into signals used by investors, brands and developers. He started Apptopia in 2011 as an online marketplace for buying and selling apps, backed early by Mark Cuban and Ashton Kutcher, then rebuilt it into a data business whose forecasts and estimates are relied on by clients including Google, Visa, Target, Microsoft, Zoom and NBC. Kay took over as CEO in 2021 as the company raised a $20 million Series C and doubled down on serving hedge funds and public-market investors with predictive mobile metrics.