Unlimited Ketone Testing & Quick Ketosis Feedback Directly On The Device

No More Finger Pricks or Urine Sticks

Fat Burn

Only BIOSENSE™  provides a full daily picture of the depth and duration of your ketosis, so you can see your true, fat metabolism rate. 


The BIOSENSE™  patent-pending deep lung sampling technology, together with an individual factory calibration process, ensures that every device delivers precise breath ketone measurements. 


BIOSENSE™  lets you set a personalized goal for your daily time and depth of ketosis, represented by the BIOSENSE™  Ketone Score. This is important because research suggests that a daily Ketone Score of 120 is associated with fat loss.

Discover Yourself

The New Technology Behind BIOSENSE™ Helps You Succeed By Providing All Day Feedback While Monitoring Your Ketone Levels

ACEs Reading

Published studies and our own clinical research has shown that blood and breath ketones are closely related. While the correspondence is not 1-to-1, knowing your breath acetone concentration does allow us to make educated predictions about your blood ketone levels.

Color Indication

The BIOSENSE™ device and mobile app put your measurement into context by providing a color indicator along with your ACEs reading. The vertical black bar on the results screen indicates where your measurement falls on the overall spectrum of ketosis.

Easy Synchronization

BIOSENSE™ stores up to 100 measurements directly on the BIOSENSE™ device and automatically transfers the data to Cronometer, as well as the  BIOSENSE™ app on your phone.

BIOSENSE™ Breath Ketone Monitoring System

USD  $299.00 $279.00 with code Welcome20 at checkout* plus tax

  • Bluetooth enabled BIOSENSE™ Device with unlimited testing
  • Micro USB Charging Cable
  • 2 Replacement Mouthpieces
  • Free app with personalized ketone data and goal tracking
  • Protective neoprene sleeve

Behind The Technology

The required deep lung sampling process provides accurate and reproducible measurements by correcting for natural variations in exhalation time and lung capacity across individuals.

BIOSENSE™ is the only breath monitor to provide this patented technology. Clinical data shows a high full-day correlation between blood and breath ketones.

Real Testimonials

Hear From Our Customers

Measuring ketone production can be a pain. I’ve recently been testing a new device called BIOSENSE™ that will change this. It’s a scientifically validated, highly accurate breath ketone monitor that makes it easy to test your ketones throughout the day.

I’m now recommending it to all of my patients that are fasting or doing ketogenic diets, and I’m using it myself. Check it out!

Chris Kresser

I love this product! BIOSENSE™ is easily the most affordable, accurate and pain-free keto tester that I’ve used. I am a 50 year old wife, mother of four and a travel and sports enthusiast. I take an active role in my well-being and BIOSENSE™ helps me fine-tune my Keto diet. Since starting Keto, I have lost 30lbs and kept it off for several years. My key to success on keto is tracking my ketone levels. With BIOSENSE™, I can track my levels without overpaying for expensive blood strips and meters. Plus, no more painful finger pricks!

Mary D.