The app: Strained. Higher stress can make it harder to lose fatScale stuck? It might be stressBefore and after I understood my nervous system: cortisol 20.6 to 11.4 µg/dL, testosterone 291 to 605 ng/dLFood, body and stress. Finally connectedEvery night it measures your stress, and whether your body is out of rhythmYour plan for today, tailored to your bodyReal Scanfit reviews on Trustpilot, translated from DanishWhy the scale won't budgeWhat does it track? Optical heart rate sensors, heart rate variability, resting heart rate, deep sleepMore energy for the people you love most
New · Just launched

Scanfit Nervescanner

Worn on your wrist while you sleep · No subscription

$149Launch price

The Nervescanner tracks your nervous system while you sleep. Those are the signals that shift with your stress hormone. So you can see when stress takes over and slows down your fat loss or muscle gain, and every morning you'll know exactly what to do about it.

New from Scanfit

See when stress is holding backyour fat loss and your muscles.

−55%less fat lost, and more muscle
lost, when your body can't recover

The Nervescanner measures your body's stress every night and tells you what to do today. So you don't quit right before it starts working.

100DAYS

Try it for 100 days. If it's not for you, we'll make the return easy.

Free shipping · 100-day trial · 2-year warranty
100-day returns
Free app included
Hans' stress hormone went from too high to completely normal in 4 months. At the same time his body got 31% more recovery at night.
Read the story →
What does the Nervescanner track?

At night: heart rate, resting heart rate, HRV (the variation between your heartbeats) and your sleep.

During the day: steps, activity and active calories. What you burn goes straight to the NutriScanner Pro, so you can see how much extra you can eat that day.

The app tells you whether your body is recovering or stuck in alarm mode.

How long does the battery last?

Up to 14 days on one charge. Charge it while you shower or sit at your desk, and you're good to go.

What about cortisol?

Cortisol is your body's stress hormone. It helps you through a tough day. But when it stays high for weeks, you sleep worse, crave sugar, and your body holds on to fat and struggles to build muscle.

Cortisol can only be measured accurately with a blood test. But your nervous system reacts to it, and that's what the Nervescanner sees. It follows the signals every night and shows you when your body is under pressure, so you can act before it hurts your results.

100-day trial + 2-year warranty

You get 100 days to try it. If it's not for you, we'll help you with an easy return and a full refund. If anything breaks within two years, we'll send you a new one.

Does it work with the Body Scanner and NutriScanner Pro?

Yes. All three talk to each other in the Scanfit app, so you can see what your food and your sleep do to your body.

Hans Landbo in the Scanfit warehouse
H
Hans LandboFOUNDER, SCANFIT
Founder story

Hi, I'm Hans.I thought I was in the best shape of my life.

While we were building the NutriScanner and the Body Scanner, I worked late, trained hard and slept too little. I called it discipline. On the Body Scanner, everything looked perfect.

But I slept badly, I was short-tempered, and the joy of training was gone. My fitness tracker gave me a new number every morning. It never told me my body was running itself into the ground.

Only when I looked back at 2–3 years of data from it did I see it. The whole time we were building Scanfit, my nervous system had been under huge pressure. The numbers were there all along. I just didn't understand them.

When I finally got blood work done, I was shocked. My stress hormone was above the normal range. And my testosterone was lower than the average man over 70. I was 23.

It explained everything: the fatigue, the short fuse, and why my body wouldn't do what I asked of it anymore.

I started to understand my nervous system.

I stopped guessing. Once I could see when my nervous system was under pressure and when it was ready, I knew when to push and when my body needed rest. Four months later my stress hormone was back to normal, and my energy was back. That's exactly what the Nervescanner shows you every morning.

Before and after I understood my nervous system: cortisol 20.6 to 11.4 µg/dL, testosterone 291 to 605 ng/dL
And my body's recovery at night (HRV) went up 31%, from 67 to 88 ms on average over 6 months. Average testosterone for men aged 70–74: 435 ng/dL (Yeap et al., European Journal of Endocrinology 2007).
See my unedited blood tests and tracker data
Lab results cortisol 568, 474 and 314 nmol/L
Cortisol · Jun 25, Jul 21, Oct 27, 2026 (Danish lab, nmol/L)
Lab results testosterone 10.1, 14.4 and 21 nmol/L
Testosterone · same three tests (nmol/L)
Tracker HRV average 67 ms, Nov 2025 to May 2026
HRV before · Nov 2025 – May 2026
Tracker HRV average 88 ms, May to Nov 2026
HRV after · May – Nov 2026

Hans' own blood tests from his Danish health app (1 nmol/L cortisol ≈ 0.036 µg/dL; 1 nmol/L testosterone ≈ 28.8 ng/dL) and HRV from his old fitness tracker. One person, several changes at once. The Nervescanner does not measure cortisol or testosterone.

My old fitness tracker showed me the numbers. It never explained what they meant or what to do. So we built what I was missing.

Hans Landbo · founder, Scanfit

Not just another tracker.The missing piece in your weight loss.

Most fitness trackers give you a score and leave you to figure out the rest. The Nervescanner connects your sleep and stress with your food and your body, so you can adjust and see results.

Most fitness trackers …

  • 20 numbers and a score from 0 to 100 every morning
  • Red, yellow and green that make you feel guilty
  • Know nothing about your food or your body
  • Often a subscription, forever
Scanfit Nervescanner
  • One message and one thing to do today
  • No grades and no guilt
  • Connects sleep and stress with the NutriScanner Pro and Body Scanner
  • No subscription. The app is free
Other trackers give you

HRV 53 ms · −9% · Score 61

The Scanfit app connects it all
NervesStressed for 12 daysBodyFat 28.4% · not movingFood750 cal under your needs

»Your body has been under pressure for 12 days, and that's why your body fat isn't moving. Eat 200 more calories and get 30 g of protein at dinner. Scan yourself on Sunday, and we'll see if it moves.«

Scanfit app icon
Scanfit app · FreeiPhone and Android
Why most people get stuck

You're doing everything right.But your body won't budge.

You eat clean, you count calories and you train. Still the scale won't move, or your muscles won't grow, even though you train hard.

When you're stressed and your nervous system is out of balance, you sleep worse, you crave sugar, and your body has a harder time letting go of fat and building muscle. That's where most people get stuck.

The Nervescanner shows you when stress is holding back your fat loss or muscle gain. So you can fix it before you give up.

How the Nervescanner sees your stress hormone

You can't feel cortisol.But your heart can.

Your nervous system: the brain sends signals through the vagus nerve to the heart, and the Nervescanner on your wrist reads your heart rhythm
Your nervous system is invisible. But every night it sends signals through the vagus nerve to your heart. The Nervescanner reads them from your wrist.
1Your stress hormone rises

When you're under pressure for a long time, cortisol goes up. You can't feel it directly.

2Your nervous system reacts

At night your heart beats more monotonously, and your pulse never fully settles.

3The Nervescanner catches it

It measures this every night and tells you before you feel it as fatigue and sugar cravings.

The nervous system and cortisol are linked: Thayer & Sternberg 2006. The Nervescanner does not measure cortisol directly.

How much of this sounds like you?

Check the onesyou recognize

0 of 6. Check the ones you recognize from your own life.

The whole system

Food. Body. Stress.Finally connected.

On their own, they give you a number. Together, they tell you why the scale isn't moving and what to do today.

Stress is slowing your weight loss0.0 lb of fat in 14 days · eat 200 more calories today
NutriScanner ProWhat you eatNutriScanner Pro

Weigh your food in 5 seconds. So you know if it's the food.

In stock
Body ScannerWhat it does to your bodyBody Scanner

Fat and muscle every week, even when the scale won't move.

In stock
Scanfit NervescannerHow your body is doingNervescanner

Sees when stress is holding your body back and tells you what to do.

New · $149
Already have the Body Scanner and NutriScanner Pro?Then you're only missing the last piece.
Order the Nervescanner
The team

Hi! We're the peoplebehind Scanfit.

Real people answer when you write to us at support@myscanfit.com.

Stine from Scanfit customer success
StineCustomer success · your guide from first scan to your goal
Hans Landbo, founder of Scanfit
HansFounder · built what he was missing
Mohamed from Scanfit customer success
MohamedCustomer success · helps you understand your numbers and keep going

FAQ

Specifications
Battery
Up to 14 days
Waterproof
IP68. Handles showers and swimming
Charging
Magnetic USB charger
Works with
iPhone and Android
Tracks
Heart rate, HRV, sleep, skin temperature, steps and active calories
Memory
Stores 30 days of data without your phone
Subscription
None. The app is free
Peace of mind
100-day trial and 2-year warranty
How do I use it?

You wear it on your wrist, including while you sleep. Every morning you open the app and get one message: go hard, take it easy, or hold back. You don't have to interpret any numbers yourself.

How long does the battery last?

Up to 14 days on one charge. Charge it while you shower or sit at your desk, and you're good to go.

Can it see my hormones?

Indirectly. The Nervescanner measures signals from your nervous system (HRV and resting heart rate) that follow your body's stress hormone. It shows how that develops over days and weeks, but not your exact hormone levels. Only a blood test can do that.

Can I use it with the Body Scanner and NutriScanner Pro?

Yes, and that's where it all comes together. The Nervescanner works on its own too, but together you see how your sleep, your stress and your food affect your body fat and your muscles.

100-day trial + 2-year warranty

Real body changes take time. That's why you get 100 days to try it, with free shipping. If you're not happy, we'll help you with an easy return.

2-year warranty. If anything breaks within two years, we'll send you a new unit for free. Email us at support@myscanfit.com and we'll sort it out.

Is the app free?

Yes. The app is free, and there's no subscription to use the Nervescanner.

Is it safe?

Yes. The Nervescanner measures with light through your skin, just like a smartwatch. No electrical current is sent through your body.

Shipping & returns

Free shipping, and your 100 days start when your Nervescanner arrives. If it's not for you, we'll help you with an easy return.

−55% fat loss: same diet with 5.5 instead of 8.5 hours of sleep, Nedeltcheva et al., Annals of Internal Medicine 2010. The Scanfit Nervescanner is a wellness product and not a medical device. It does not diagnose, treat or prevent any disease. Hans' numbers are one person's own measurements and not a promise of results.