Used to think it was okay but it always stopped several times on every trip and we would have to restart. Yesterday, during a critical moment, it stopped and I was not able to restart. It said it wouldn't let me restart until I was stopped and parked! I was the passenger and it would have been perfectly safe for me to restart it while the vehicle was in motion. I am angry that it went out (not my choice) and insulted that it is now making decisions for me. This app is totally useless.