The Kangaroo doorbell camera is buggy, unreliable (at best), and it eats batteries like they're going out of style. But you get what you pay for and it was only $25, so I didn't expect much. But I DID expect the app to be more user-friendly! There's no alert or warning when the camera batteries are low/dead. Notifications that I've already dismissed appear again randomly. Plus, the notification is SUPER loud for only this app but there's no option to change it anywhere in the app settings!