Feasibility and Privacy Concerns for App Monitoring and Blocking 3rd Party Apps on iOS

Hello,

I am interested in developing an iOS app that can monitor and potentially block third-party applications while a specific app is running. I would like to inquire about the feasibility of implementing such functionality within the iOS ecosystem and if there are any privacy terms or restrictions that I need to be aware of to ensure compliance with Apple's policies.

Thank you for your guidance.