Based in Portland, Oregon, Phase4 Mobile creates innovative and elegant apps focused on improving quality of life.


sleepsoundshq.com Sleep Sounds HQ
Instantly relax your overactive mind, and fall asleep fast with over 600 soothing sounds from around the world. Sleep deeply and wake up fresh and energized.
sleepsciencealarmclock.com Sleep Science HQ
Wake up gently to over 750 sounds, understand your sleep, and record your dreams. Sleep Science helps you track, analyze and improve your sleep.
rainsoundsapp.com Rain Sounds HQ
Relax with over 70 high-quality rain sounds from around the world. Listen to showers and rolling thunderstorms in the world’s forests, countryside, and cities.
whitenoisehqapp.com White Noise HQ
Transform your bedroom, baby’s room, hotel room, or office with over 75 high-quality white noise sounds individually selected for their noise-blocking qualities.
powernaphq.com Power Nap HQ
Recharge with the perfect nap. Power Nap HQ monitors your nap and wakes you up at just the right moment so you feel fresh and rejuvenated all day.
Get Tinnitus HQ Tinnitus HQ
Relieve annoying tinnitus symptoms. Mask ringing in the ears with advanced frequency filters and over 500 natural sounds.