Woman sleeping peacefully

Your Nervous System Is Talking.This Test Lets You Hear It.

35 Seconds. No Wearable Required. Uncannily Accurate.

The same voice-analysis technology used by U.S. Special Forces and elite athletes to measure stress, resilience, and recovery—now available to you.

Take the Free Stress Test

No app download. No credit card. Just your voice.

How Stressed Is Your
Nervous System?

Take a free 35-second voice assessment to measure your stress level.

Tap the mic and speak naturally for 35 seconds
Please use a mobile phone microphone for best results.

Listening…

35

Speak naturally about your day…

Analyzing Your Voice…

This takes just a moment.

Your Coherence Score

0
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Something Went Wrong

Unable to access microphone.

How the Stress Test Works

Speak for 35 Seconds

Talk naturally about your surroundings. No script needed.

Get Your Coherence Score

Instantly see how balanced or strained your nervous system is.

See What's Possible

Use NuCalm to improve your score and track your progress over time.

Unlike wearables that show you data without solutions, NuCalm measures your stress and gives you the tools to fix it—then proves it’s working.

Why Your Voice Reveals MoreThan Any Wearable

Your vagus nerve—the main highway of your autonomic nervous system—directly connects to your voice box. Every time you speak, your voice carries unconscious signals about your stress, fatigue, and resilience.

The NuCalm Stress Assessment captures over 1 million data points and analyses 10,000 biometric markers from your voice frequencies. It’s more accurate than HRV snapshots from a Whoop or Oura—and it takes 35 seconds, not 24 hours of wearing a device.

Clinically Validated Results

In clinical use, users have seen their coherence scores improve by 10–20 points within days of using NuCalm. One veteran went from 72 to 84 after a single 20-minute session.

Trusted by Those Who Can’t Afford to Guess

I scored 63 after a rough night and a sports injury. After one 50-minute Rescue session, I tested again: 93. I've never had a tool that could show me exactly what's working.

Physician

NuCalm User

NuCalm's DeepestSleep Programs have been an incredible benefit for me, giving me deeper, more refreshing sleep than I ever expected. I wake up calmer, more energized, and ready to face the day with a clear mind.

Liam S

California

Sleep and recovery aren't optional, they're how we survive. NuCalm gives me the sleep I deserve.
Brooke Burke

Brooke Burke

Mother, Actress, Business Owner

Listening to NuCalm, I experienced the most deep sleep, the most REM sleep, and most sustained sleep I've EVER had in my life. I rely on the results & I love how easy it is to use.
Tony Robbins

Tony Robbins

America's #1 Life & Business Strategist

Your Score Is Just the Beginning

When you take the test, you’ll get your coherence score instantly. If it’s lower than you’d like, you’ll have the option to start a free 7-day trial of NuCalm—and watch your score improve.

Full Access

Rescue, DeepSleep, PowerNap, Focus & Ignite

Unlimited Assessments

Track your progress over time

No Credit Card

Required to start your trial

Take the Free Stress Test Now

Frequently Asked Questions

Is this really free?
Yes. The Stress Test is completely free. The 7-day NuCalm trial requires no credit card.
How is this different from meditation apps?
Meditation apps ask you to build a practice over months and hope it works. NuCalm uses patented neuroacoustic technology to shift your brainwaves in minutes—and the Stress Assessment proves it’s working.
Can I fake the test?
No. The assessment measures unconscious voice frequencies you can’t control. It’s been validated in clinical and military settings.
What if my score is already good?
Great—NuCalm helps you maintain and build resilience. Track your score over time to see how travel, stress, sleep, and recovery affect your nervous system.

Ready to Find Out Your Score?

35 seconds. Free. No wearable required.

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