Freedom is a great service; I have a "forever" subscription. In addition to blocking apps, it works on iOS and you can manage all your devices, sessions (which

Freedom is a great service; I have a "forever" subscription. In addition to blocking apps, it works on iOS and you can manage all your devices, sessions (which can be scheduled), and blocklists centrally from a dashboard in your profile at their website. They also offer some nice affiliate discounts.