Then again, Epic Games isn't a non-profit organization. The developer announced on May 6 that Fortnite had 350 million registered users. A May 14 Sensor Tower report estimates that 96.7 percent of all mobile users are on iPhones to a tune of about 125 million installs. (Granted, there's a lot of overlap between console and mobile user registrations when the game has crossplay.) That same report claims that overall spending within Fortnite reached $1 billion on mobile devices barely more than 2 years after its release with more than half of all spending happened via the App Store.