Google also monitored iPhone usage with an app that collected data through Apple's back door

It looks like Facebook was not the only one abusing Apple’s system for distributing employee-only apps to sidestep the App Store and collect extensive data on users. Google has been running an app called Screenwise Meter, which bears a strong resemblance to the app distributed by Facebook Research that has now been barred by Apple. In its app, Google invites users aged 18 and up (or 13 if part of a family group) to download the app by way of a special code and registration process using an Enterprise Certificate. That’s the same type of policy violation that led Apple to shut down Facebook’s similar Research VPN iOS app, which had the knock-on effect of also disabling usage of Facebook’s legitimate employee-only apps — which run on the same Facebook Enterprise Certificate. Google said in a statement, “The Screenwise Meter iOS app should not have operated under Apple’s developer enterprise program — this was a mistake, and we apologize. We have disabled this app on iOS devices. This app is completely voluntary and always has been. We’ve been upfront with users about the way we use their data in this app, we have no access to encrypted data in apps and on devices, and users can opt out of the program at any time.”