This application contains a collection of 12 sounds that are proven to help your baby to calm down, relax (even when crying) and fall asleep more easily. Tested with my own little one and I have to say it works perfectly as the baby sleeps very well after listening to the sounds for a couple of minutes! Different babies react differently to different sounds, and you need to try them out to see which one you baby likes the most.
Most recommended sounds for a good baby sleep: hairdryer, hoover, drill, radio, shower. It is also recommended to put your phone into plane mode before putting it close to you baby (in order to turn off your signal and network).
Different language versions available.