This app does not contain advertising. There are 3 kinds of music playing in infinite loop, which allows babies to sleep comfortably and to be peaceful and calm when the application is run. Unless you turn the Player off, the music plays continuously, allowing your baby to relax in the infinite loop. You don't need to be connected to the internet, you can have 3 kinds of relaxing colic baby music in your own application and you can make your baby sleep comfortably by listening to the relaxing colic music for hours on your mobile phone without using internet.