I really love the app and the idea - I am using it on an iPhone 13 Pro. It does work to block everything but there seem to be issues when selecting or deselcting from large categories. E.G. I have 30 Health Apps and I want to enable SleepCycle while keeping the others blocked. That does not work it will always automatically unblock all 30. Therefore it does not let me create any profiles with actual use unless I block everything.