No More Restless Nights
From Adaptive Sound Technologies, Inc.
Perfecting the Sound of Sleep since 2008
Start your risk-free trial | Available on iPhone, iPad, and Android
Sleep Only is still in development, and is not yet in App Store or Google Play. Click here to read the full app description.
Over 120 high-quality sounds, expertly curated to help you relax, fall asleep better, promote deeper sleep, and block unwanted noise.
Your sleep is a no
nonsense priority
Unlike other apps full of
distractions, Sleep Only focuses
on getting you to fall asleep
faster and stay asleep longer
Expertly curated quality
non-looping sounds
120+ sounds across 6 categories:
Noises (from white, pink, brown to green), Fans, Nature, Water, Lullabies, and Other.
Patented Adaptive
Sound Technology
The only sleep sound app that can automatically adjust output to optimize your sleep environment.
We DO NOT
Advertise In App
Track Your Data
Sell Your Data
Record Your Data
Wake You Up With Notifications
Need Internet Connection*
*After Initial Download
We DO
Use Patented Adaptive Tech
Improve Sleep Quality
Increase Your Sleep Duration
Reduce Sleep Awakenings
Reduce Sleep Onset Time
Wake You Up Feeling Refreshed
Support Wind Down
Sleep Study Results:
Our study has been validated by SleepScore Labs.
Less Time Awake: 76% increase in ability to sleep through the night without waking up
Feeling More Rested: 46% increase in feeling rested upon waking in the morning
Better Sleep Quality: 37% increase in overall sleep quality
Falling Asleep Faster: 30% decrease in minutes to fall asleep
*All results based on the Sound+Sleep SE. All sounds are available in Sleep Only.
All sounds from Sleep Only come from ASTI sound machines.