How this is possible for iOS? Can someone share technical details on this iOS implementation? IMO this cannot be done without validating user privacy and giving app some crucial screen reading permissions.
Source: I am a developer of Clearspace, which is an iOS Screen Time App https://apps.apple.com/us/app/clearspace-reduce-screen-time/...
Not sure what OP is running waitlist for, my guess is a combination of screen time + focus modes + content blockers in Safari.