Purchase the whole version for guided meditations, a larger selection of sounds for sleep! It was/is money well spent! If you only need background sleeps sounds to either relax or fall asleep to, the FREE version still has a great selection! Great app!! Only suggestion or request I have is an alarm option to wake up to either a nice guided meditation or some of the relaxing sounds/music/tones you have. Besides that, the app is perfectomundo!!! :)