Keyto Breath Sensor - Lifetime Membership for $249

Get a limited-time lifetime membership to Keyto for just $249!

Get actionable insights about your body in just one breath. Sustain ketosis & lose weight. Backed by over a decade of science, Keyto offers a new perspective on the popular keto diet. In just one breath, Keyto breaks down everything into an easy-to-understand Keyto Level so you know exactly where you are in relation to your weight loss goals.

• Instant & accurate breath acetone readings
• Easily access actionable insights
• Personalized meal plans
• Delicious and easy keto-friendly recipes
• Stay accountable with the Keyto community

Customer Reviews

Based on 282 reviews
90%
(254)
10%
(28)
0%
(0)
0%
(0)
0%
(0)
T
T.L.
Easy Keyto to Keto

I love this new innovative tool to let me know when I’m in Ketosis. It is so easy to operate that I bought one for my senior mom to monitor her Ketosis as well. Being in Ketosis is the only way I can keep my diabetes under control. Thank you!

R
R.
Great Product, Very Motivating

Ive been using Keyto since April and I love it! Simple, Effective, and super motivating!!!

A
A.
This Keyto system is Awesome!

I’ve been up and down with weight all my life. Plus or minus 5kg. As I’ve got older it’s been so much harder to lose weight. Tried so many things but this has been incredible. Within 6 days of strictly following the meal plan and really only light exercise (4-5km walk a day), I got my Keyto rating up to 6 and have lost 2kg already. I feel great, sleep well and am not hungry at all. I also just stopped smoking which made it more surprising as I was expecting to put on weight. Highly recommend this easy to follow and actually quite a fun eating plan.

H
H.M.
Science-based, high tech way to monitor ketosis

I have been keto; i.e., following a ketosis-based metabolism diet, for quite some time. I lost over 60 pounds and at 65 years old my health markers show me to be at elite athlete level. For me, the Keyto is just pure convenience as I have used both blood test and "Keto-Stix" (urinalysis) in the past to monitor my ketosis level. The Keyto is just fantastic. You can use it anywhere and as often as you like (the single AAA battery has a phenomenal lifespan!). This is very important to me as I carb-cycle around my fitness regimen. I like to call it 'keto-surfing' because I will dip in and out of ketosis around my workout cycles. I also do a lot of biohacking and the Keyto is just perfect for homing in on exact carb levels for supporting muscle hypertrophy while minimizing lipid storage. I just can't say enough good things about this device.

For people just starting a keto diet with the intent to lose fat, the Keyto diet protocol cannot be beat. No calorie counting, eat until satisfied, easy food labelling (colors) and just good nutrition that includes fiber and micronutrients. The diet could not be simpler and the results are nothing short of spectacular and the Keyto provides that extra incentive to stay the course and drop the weight.

J
J.
Great way to keep yourself in check

It’s a super convenient way to keep track and correlate how food choices affect ketone levels. There are no consumables other than the battery which lasts a long time. Highly recommend for anyone living or trying to live a low carb lifestyle.

R
R.E.
Amazing

Honestly I can’t say enough good things. As someone who has used ketosis for weight loss and lifestyle I love the fact that it lets you know right where you are from the start of your journey on. So when you’re feeling bad in the beginning it’s easy to look at your number and see exactly where you are and it gives you motivation to keep going. The app is incredible, lots of tips and helpful information. It’s easy to use, accurate and so much cleaner than strips. The other testers that use your breath don’t test properly and do not use the proper aspects of your breath for the most accurate reading. All in all, it’s easy, convenient and accurate. What more could you ask for.

d
d.r.
Do yourself a favor and buy this now.

There’s nothing better than instant feedback. I’ve tried many “diets” and stopped because I wasn’t sure if it was “working.” This, however, is science. If you’re eating correctly, the body will do its thing. How do you know if you’re eating correctly, Keyto will tell you. Use the pen and you’ll know instantly if you’re in ketosis and continue to test to make sure you stay there.
The app has tons of recipe ideas. It may sound corny, but it’s fun.

D
D.S.
An Awesome thing!

This is a well thought out product....I have been carnivore for 450 days now and in deep ketosis at 8 .This is something I struggled with before the keyto breath sensor....once you learn to relax and breath ....you are on your way.......Happy breathing🌹
I really do have to say that this is a well thought out product ....WELL WORTH THE WAIT🔥

G
G.
This thing is awesome!

Knew nothing about keyto diet. The app guided me through everything I needed to get started. Feeling way more energy after a week. Glad I got this!

R
R.
Great product

I have several other ways of measuring Ketones including other breath devices. This is the lightest and easiest to use of the group. And I have found the accuracy to match my blood strips on a regular basis.

...

One breath to a new you.

Keyto analyzes your breath and tells you how much fat you’re burning.

Easy & Intuitive
Accurate & Reliable
Backed by Science
Lose Weight Naturally

Easy & Intuitive

Accurate & Reliable

Backed by Science

Lose Weight Naturally

Understand your body in just one breath.

Backed by decades of scientific research, Keyto offers a new perspective on the popular ketogenic diet. Keyto breaks down all the data into an easy-to-understand Keyto Level so you know exactly where you are in relation to your weight loss goals.

...

How it works

Measure fat loss, accurately and effectively.

STEP 1

Breathe into the device

Keyto measures the ketones in your breath.

STEP 2

Check your Keyto Level

Track your ketosis in real time.

STEP 3

Eat the foods you love

Eat delicious foods like cheese, bacon and almonds.

No consumables and no pain.

No painful finger pricking or gross pee sticks - Keyto removes the invasive, inaccurate, expensive and painful barrier for tracking your ketosis.

Stay accountable with a supportive community

KEYTO PREMIUM ONLY

Track, compare and even compete with supportive, like-minded individuals that are improving their lives with Keyto

A complete, pocket-sized support system.

Use Keyto absolutely anywhere! Stay committed to your keto lifestyle with one incredibly portable, easy to use device and app.

Choose Your Plan

We designed the Keyto program to do far more than just provide a convenient Keyto Level. Starting at just $8/mo, our leading Keyto Premium membership equips you with everything you need to succeed on the keto diet.

MOST POPULAR

Keyto Premium

$195

Comes with a FREE Keyto Food Box! Access exclusive in-app features like personalized meal plans, Keyto Code food guide database, delicious Keyto recipes, community groups and more!

Device Only

$99

Get the Keyto Breath Sensor without premium features or free Keyto food box.

Order the Device

CHOOSE YOUR PLAN

Why Keyto Premium?

  • Delicious In-App Keyto Recipes
  • Personalized Meal Plans
  • MD-Approved Keyto Code Food Guide
  • Access to In-App Keyto Community Groups
  • Comes with a FREE Keyto Food Box ($80 Value!)
Comes with FREE snack box!

Equip yourself with everything you need to succeed. Order Keyto Premium today and get a Keyto Low-Carb Food Box ($80 value) absolutely free!

CHOOSE YOUR PLAN

Order Keyto Today

Keyto Breath Sensor

Keyto Breath Sensor

Get actionable insights about your body in just one breath. Sustain ketosis & lose weight.

Recently Featured In...

Order Multiple Keyto Breath Sensors

Customer Reviews

Based on 282 reviews
90%
(254)
10%
(28)
0%
(0)
0%
(0)
0%
(0)
T
T.L.
Easy Keyto to Keto

I love this new innovative tool to let me know when I’m in Ketosis. It is so easy to operate that I bought one for my senior mom to monitor her Ketosis as well. Being in Ketosis is the only way I can keep my diabetes under control. Thank you!

R
R.
Great Product, Very Motivating

Ive been using Keyto since April and I love it! Simple, Effective, and super motivating!!!

A
A.
This Keyto system is Awesome!

I’ve been up and down with weight all my life. Plus or minus 5kg. As I’ve got older it’s been so much harder to lose weight. Tried so many things but this has been incredible. Within 6 days of strictly following the meal plan and really only light exercise (4-5km walk a day), I got my Keyto rating up to 6 and have lost 2kg already. I feel great, sleep well and am not hungry at all. I also just stopped smoking which made it more surprising as I was expecting to put on weight. Highly recommend this easy to follow and actually quite a fun eating plan.

H
H.M.
Science-based, high tech way to monitor ketosis

I have been keto; i.e., following a ketosis-based metabolism diet, for quite some time. I lost over 60 pounds and at 65 years old my health markers show me to be at elite athlete level. For me, the Keyto is just pure convenience as I have used both blood test and "Keto-Stix" (urinalysis) in the past to monitor my ketosis level. The Keyto is just fantastic. You can use it anywhere and as often as you like (the single AAA battery has a phenomenal lifespan!). This is very important to me as I carb-cycle around my fitness regimen. I like to call it 'keto-surfing' because I will dip in and out of ketosis around my workout cycles. I also do a lot of biohacking and the Keyto is just perfect for homing in on exact carb levels for supporting muscle hypertrophy while minimizing lipid storage. I just can't say enough good things about this device.

For people just starting a keto diet with the intent to lose fat, the Keyto diet protocol cannot be beat. No calorie counting, eat until satisfied, easy food labelling (colors) and just good nutrition that includes fiber and micronutrients. The diet could not be simpler and the results are nothing short of spectacular and the Keyto provides that extra incentive to stay the course and drop the weight.

J
J.
Great way to keep yourself in check

It’s a super convenient way to keep track and correlate how food choices affect ketone levels. There are no consumables other than the battery which lasts a long time. Highly recommend for anyone living or trying to live a low carb lifestyle.

R
R.E.
Amazing

Honestly I can’t say enough good things. As someone who has used ketosis for weight loss and lifestyle I love the fact that it lets you know right where you are from the start of your journey on. So when you’re feeling bad in the beginning it’s easy to look at your number and see exactly where you are and it gives you motivation to keep going. The app is incredible, lots of tips and helpful information. It’s easy to use, accurate and so much cleaner than strips. The other testers that use your breath don’t test properly and do not use the proper aspects of your breath for the most accurate reading. All in all, it’s easy, convenient and accurate. What more could you ask for.

d
d.r.
Do yourself a favor and buy this now.

There’s nothing better than instant feedback. I’ve tried many “diets” and stopped because I wasn’t sure if it was “working.” This, however, is science. If you’re eating correctly, the body will do its thing. How do you know if you’re eating correctly, Keyto will tell you. Use the pen and you’ll know instantly if you’re in ketosis and continue to test to make sure you stay there.
The app has tons of recipe ideas. It may sound corny, but it’s fun.

D
D.S.
An Awesome thing!

This is a well thought out product....I have been carnivore for 450 days now and in deep ketosis at 8 .This is something I struggled with before the keyto breath sensor....once you learn to relax and breath ....you are on your way.......Happy breathing🌹
I really do have to say that this is a well thought out product ....WELL WORTH THE WAIT🔥

G
G.
This thing is awesome!

Knew nothing about keyto diet. The app guided me through everything I needed to get started. Feeling way more energy after a week. Glad I got this!

R
R.
Great product

I have several other ways of measuring Ketones including other breath devices. This is the lightest and easiest to use of the group. And I have found the accuracy to match my blood strips on a regular basis.