

DeepestSleep
Fall Asleep Faster. Stay Asleep Longer.
DeepestSleep unlocks the secret to deep, restorative sleep by gently and precisely guiding brain waves to the deepest delta waves. Fall asleep easily, sleep deeper and longer, and wake up feeling refreshed. The patented neuroacoustic software trains your brain to relax and access deep sleep naturally, like a tuning fork. The more you use it, the better it gets. You will even start dreaming again, every night.
Key benefits of DeepestSleep:
“DeepestSleep helps you experience a night's rest like a child again. With DeepestSleep you will feel well rested and refreshed. It’s an excellent tool for making sleep fun again!”
“DeepestSleep is like a digital sleeping pill.”
“DeepestSleep is my bedtime treat; it helps me to shut down my brain before drifting off to sleep. It is impressively effective.”
“DeepestSleep is a sleep knockout punch.”
“DeepestSleep helps me to get deeper sleep and using NuCalm Rescue or PowerNap consistently helps me sleep as well. So, I use NuCalm to help aid in my sleep, both during the day and nighttime. But then I also use it to help me recover because my sleep is not perfect and I have a very intense lifestyle, and travel too much. NuCalm significantly helps me rescue and recover.”
“DeepestSleep is the first time in my adult life that I have ever slept without nightmare… or fear of PTSD seizure. And for the first time in thirty years, I look forward to my next night’s sleep. I cannot begin to describe my feelings of this, beginning with pure and utter relief.”
“With NuCalm Rescue and DeepestSleep I finally began to sleep through the night again and my body has recovered in ways I thought unimaginable. Thank you NuCalm.”
“DeepestSleep is magical and works every time!”
How to Use DeepestSleep


- 1Connect your device to your speaker
- 2Set device to Do Not Disturb & Press Start on a DeepestSleep track
When to Use DeepestSleep
Want to improve sleep quality?
DeepestSleep on
Drift off naturally into deep, restorative sleep, then sleep deeper and longer
What to Expect During DeepestSleep
Your mind quiets and your body relaxes as you drift naturally into sleep within minutes
Enjoy your sleep with fewer wake-ups, more deep sleep and REM, dreams, and true restorative rest
Feel refreshed, restored, energized for your day. You will notice that your quality sleep increases your mental endurance

BONUS: All NuCalmers get FREE access to the revolutionary Stress Test Voice Analysis Technology
Your nervous system. Quantified.
The Stress Test
The science is complicated. The application is simple. Speak for 35 seconds. Get a clear nervous system score. No guesswork.
Built to measure what wearables try to estimate: your nervous system's real-time health.
Fast, non-invasive, and deeply personal. Your voice carries the truth about your nervous system.
Your Coherence Score (0-100). Higher means more balanced and resilient.
Your Coherence Score (0-100)
A scientific measurement of balance and resilience. Higher means more balanced. Lower means dysregulated, strained, and stressed.
How to Read Your Score
Use it as your nervous system's report card. Track trends and see the impact NuCalm has on balancing your nervous system.
Take the test at the same time each day to compare apples to apples.
Sleep, travel, training, alcohol, stress. Your score will teach you quickly.
Measure. Regulate. Re-test. Build proof that your nervous system is getting into balance.
The Science Behind DeepestSleep
This has the most complex physics of any NuCalm product. The patented neuroacoustic software gently and precisely guides brain waves down into delta (4Hz - 0.5Hz), the deepest sleep range. The first 50 minutes uses powerful physics to induce sleep. It is repeated at hour 4 so you fall asleep with ease if you wake up in the night.
Science Behind NuCalm
Quick Reference
| Use When | Recommended Time | You'll Feel |
|---|---|---|
| At Bedtime | 8-10 hours | Rested, Restored, Ready |








