I got a client request to build a parental control app like Parentkit(https://parentkit.co/) or Ourpact (http://ourpact.com/) to help parents manage their children devices. After doing some research online, I figured that it could be a MDM feature and requires an apple enterprise account for implementation. However, Apple developer program support does not allow me to create an enterprise account for developing a MDM system for non-company members. They also said that any non-company use of MDM is not allowed by Apple. If what they said is true, MDM implementation should not be allowed in the abovementioned parental control apps. Would they be using other means without the need to register an enterprise account to archieve real-time, over-the-air control on device restriction? If that is the case, what else I should read and work on to build a parental control apps like those without registering an enterprise account?