Invisible Fence of Cumberland Valley

The fence works as expected; my dogs stay within the boundary. The company did a great job of coming out with multiple training sessions with me and my pups. The problem is the app is atrocious. It sometimes notifies you if your dog touches the boundary. And when your dog does cross and comes back, it's accuracy of notifying you in a timely manner is horrid. 30 minutes plus. Sitting and looking at my dog sitting on my deck while the app continues to say she's out of bounds, which is stressful when I get the notification at work. If you can afford it, buy a real fence.