Android/iPhone: White Noise is an easy to use tool for generating ambient noise and taking timed naps—perfect for turning your iPhone or Android device into a power-nap companion.
White Noise comes with 10 ambient loops including rain, fans, trains, thunderstorms, crickets, and more. You plug-in your headphones, cue up the track you want, and set either a timer or an alarm depending on whether you want to nap for a set amount of time or until a specified time.
You can adjust the device and ambient sound independently making it easy to mute your phone while cranking up the ambient noise or keep your phone on in case you're on call or need to hear other alerts. White Noise is available in a free Lite version and a premium version ($1.99), the only difference being the number of tracks you have access to—10 and 40 respectively. Visit the Android Market to grab a copy or scan the QR code at right.