Apple recently removed several parental control apps from the App Store. Apple has always believed that parents should have tools to manage their childrens device usage. Several of these apps were using a highly invasive technology called Mobile Device Management, or MDM. MDM gives a third party control and access over a device and its most sensitive information including user location, app use, email accounts, camera permissions, and browsing history. We are committed to offering a place for these apps to thrive as they improve the user experience for everyone.”]
Source: https://www.apple.com/newsroom/2019/04/the-facts-about-parental-control-apps/