I love the variety of sounds that are available, and, coupled with the White Noise Store, you can keep as many sounds as you’d like. I use WhiteNoise on lunch breaks, as I sleep in my car, and, oftentimes, at there’s at least one person who blares out loud, obnoxious music, or talks on their phone while I’m trying to recharge my batteries with a short power nap. WhiteNoise has higher-pitched sounds(Pink Noise) for the booming bass-based obnoxious music that someone will blare out from their car stereo, and, lower-pitched sounds(Room Noise, Brown Noise, Gray Noise, and Space Station Sleep Room, just to name a few) to drown out the higher-pitched music, or conversation. The timer function is great, and there’s even a Fade-In option that let’s you have your selected wake noise fade in slowly. And, here is what cost WhiteNoise a 5th Star: When the Fade-In option is activated, your selected Wake Noise fades in gradually, but, your sleep noise stops. Suddenly. And, THAT wakes me up BEFORE the Wake Noise starts. If the Sleep Noise were to slowly start to fade, I’d say, 30 seconds before the Wake Noise were to kick in, AND THEN, the Wake Noise were to slowly fade in at, say, 15-20 seconds before the scheduled wake-up time, that would make WhiteNoise an even better investment!