https://www.theverge.com/2019/1/30/18204064/apple-google-monitoring-phone-usage-screenwise-meter

Google is distributing a private app that monitors how people use their iPhones, in much the same way that Facebook did — and got in trouble for. Google’s app, reported today by TechCrunch, rewards users with gift cards for letting Google collect information on their internet usage.

The app appears to rely on Apple’s enterprise program, which allows for the distribution of internal apps within a company. That could be a problem: Apple says these apps should only be used by a company’s employees, and companies that violate the policy could be banned, having all their internal apps disabled. That’s exactly what happened to Facebook today.