This free app, available here, gives you something well worth paying for: better sleep. Do you find it hard to sleep in a hotel or on an airplane? The ambient sounds in White Noise Lite are ready to help. Choose from eight sounds—waves, thunder, crickets, rain, grandfather clock, chimes, white noise, or fan—to help yourself relax and sleep more deeply. We found it soothing to have White Noise playing in the background, even when working. We also like that it has a timer setting, so that your relaxing sound won't play all night.