2022 March - worse than useless - false sense of security. It just stops. So I've stopped using for now. 2022 - update - randomly disappears! Not good! Also status doesn't always show up on icon bar! As for functionality - consider one only wants 1.1.1.1 to apply to a small number of apps - there's no way to manage easily. You have to tediously (introducing possibility of error) click dozens of boxes to exclude. 2021 - Original use. Good idea. Credible vendor. Problems with stability though.