What I want to do? I want to completely block network traffic for installed iOS apps. Hence, I need to filter network traffic based on the app, which executes this network request. Note that my app is created for personal use and learning purposes. How is this possible on iOS. Could you kindly point me into the right direction? What I don't want to do? Block network requests just by using the given domain names or using local VPNs. What I did? I skimmed through the Network Extension documentation and this forum. https://developer.apple.com/documentation/networkextension/content-filter-providers?language=objc https://developer.apple.com/forums/thread/692597 Thank you! BR, Markus