I bought two locks, one for the front and one for the back door. The product is well designed and good build quality. The software however, at least on iOS is not as good as the physical product. In addition to some glitching, for two lock combination, the auto-unlock menu in the app is not accessible for the second lock, I was able to get it working for myself with logging out and in again but I wasn't able to get it working for my wife.