White Noise lets you take the sounds of lapping waves, crickets, and other sources of rhythmic noise with you wherever you go. You can control the volume and set the timer to play a sound continuously for up to eight hours -- even though the timer looks like it only measures minutes. Background noises are well-recorded and sound clear even through an iPhone’s speakers, and White Noise keeps playing even after your iPhone or iPod touch’s screen dims. We wouldn’t mind a greater variety of sounds and an option to fade from one sound to another.