Pink noise reduces the difference between the background hum and loud (that interrupt your sleep), so it may help you fall asleep faster and keep you in a deep sleep longer. You may also feel more rested when you wake up. Features: ★ True generated pink noise (no pre-recorded audio). ★ Simplicity. ★ Volume controlled by physical buttons or in-app. ★ Handy notification controls. ★ Low battery usage. ★ Shutdown timer for sleep. ★ Great for sleep / memory. How to: Just press big "Play" button and pink noise will be played, then you may stay in app or press home / back to continue playing. Disclaimer: This is not medical advice.