Sounds can continue to play when your phone is locked. Use the built-in sleep timer to turn off your soundtrack after baby is asleep or let Baby Sleep Aid run through the night to help with self-soothing. Features: + Simple and intuitive UI + Create a custom mix of 20 white noises, lullabies or nature sounds + Customize screen effects and color + Built-in sleep timer + Supports all iOS devices running iOS 13 + Dark mode Please contact us through the app if you have any suggestions for future updates!