I love the Keyto! Its very portable and packaged nicely. Its easy to connect to my phone (Android) and easy to use. The warm up takes a while, but that's not a problem for me. Based on what I'm eating and my macro tracker, it seems to be very accurate. Its way more cost-efficient than blood checkers and I find it fun to use! Highly recommend.

I bought this sensor a while ago but have not been doing keto as much as I like. I travel a lot and it is hard to follow when on the road. However, no more excuses. I have a blood ketone “machine” as well and 1.5 on that is “5” on this sensor. So still trying to associate all the numbers but so far, the Keyto sensor is good! It is light and no more expensive strips to use 3x daily. Just blow. Takes a while to calibrate but oh well. The 7 day Trader Joe plan is awesome!! Get one!! Well worth it. Getting the upgraded app will help as well but I’m sure that you can do without if money is tight. Cheers!

I’ve used ketonix, and test strips. Keyto is so much easier, including warming up more quickly so I don’t waste as much time, and I appreciate that it's BlueTooth to my phone, unlike other solutions. Perfect product to track my Keto levels.

I love this because there were foods that I wasn’t sure about...like some dairy and low carb sweets...and this really helped to pinpoint trouble spots. Plus, it is a great positive reinforcement for the days where my motivation lagged. Also, really helpful when traveling, and the small size packed well. Well worth it’s price.

Having the Keyto has kept me motivated because now I know when I am in ketosis and that makes me want to stay in ketosis. I am very happy with my Keyto and I highly recommend it.

This device is so much better than pricking your fingers for blood testing. Handy and portable!

This unit has changed my life. No more guessing if i am in ketosis.
Quick and easy test and very accurate. Thank you Keyto

Early backer here! Im UK based, and this has been incredible. Its so incredibly accurate it wonderful. Ive tried skewing it by maybe having over non-ketoers try in in direct succession, or by doing it with a half breath, or shortly after vaping, or after a drink (one not 5 mind you) and its always correct and amazing. Ie been using it every day for about 4-5 months, and it still has yet to run out of battery. Diet wise, its been great, losing consistent weight and looking and feeling great. Never been a fat girl, but just a bit over 'normal teenage girl' size (extra 10 kilos) so not much but not too bad either. and so far its just been great. Falled out of ketosis in and out a couple time, but every time i get out of it and decide im bored of it and just wanna eat a pizza, i realise suddely how sh*t i feel all the time when im on carbs and how tired and lethargic i am. not gonna lie, its even gotten so good i want to read more, do better at uni, do better at sports and so on. I am a very very logically minded person, and require accurate data on things, so having a consistent monitor is great. and every time i think "nah its not worth it its too hard" and i go back to carbs, i realise "no its not worth it to exchange a temporary pizza break with the months of hard work and the headaches and stomache aches resulting from car bs arent worth it either". not allergic to anything, its just odd how much you realise your 'normal' aka bloating and tireness you feel when on carbs, when you suddenly get out of it all. its odd, i kept on hoping keto was just a joke trend, like a cult people were part of to think they were better than you, but no. its all true. it really is as good. innitially, yes not gonna lie the headaches were annoying, but *pun intended* - it was all in my head. afterwards, smooth sailing. couldnt have done it without the accurate measurement. now im on the website getting for my mum, and see i can write a review, so i thought, people needa know. cheers! A

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🔥

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!

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.

Full marks to the Keyto team. Excellent updates and support. Product is professionally packaged and the device is robust and well made. Keyto App is easy to navigate and provides very helpful insights for selecting the right food diet and better health.

I love my Keyto! Once you get the hang of it, it is very motivating to track your keytones accurately by just breathing into the sensor. It has shown me which foods work best for my Keto journey (or not!) as well as which fasting schedules are best for me. I know I can just fire up the Keyto, blow and gauge my progress. Thank you! As an aside, the app has fabulous resources, recipes, even a week meal plan with a shopping list - love it!

Yes they want to to buy their Keyto Pen, I own 2, but they don’t stop there. They want you to succeed and have amassed all kinds of help readily available to you. Take the dive, buy a pen. It tells you exactly where you are and where you need to go. You won’t regret it!

Nothing much to say. Just works great and do what it has to to.
I would buy it anytime again.
Less 20 kg since i have it!

I purchased Keyto for its simplicity. I didnt want to do the keto blood tests & the keto urine strips are just not great. I used Keyto for about 2 months straight. I found it easy to use, and easy to understand. I never had any issues while using it other than having to change the battery. I think its a great tool for anyone starting out whose looking for a simple way to determine if they are in ketosis. I will continue to use mine!

I love being able to easily keep track of whether I'm in ketosis or not with the Keyto. I was using expensive blood testing strips, so limited my use of them. There's no need to with the Keyto!

Keyto Breath Sensor

My Keyto has suddenly became my new friend! So easy to monitor your keto level on the go. Easy to use and easy to understand. I am cross checking the data with some blood testing and I find it very accurate :)

I’ve been on the Keto diet for over 2 years and have lost and kept off 40 lbs. I have never used any sort of glucose meter so knowing for sure what foods might be a trigger or hold inflammation for me has not been easy. Since using the Keyto I can see exactly what foods cause me to stay in ketosis and which foods lower me or knock me out completely. It has made staying on Keto and in ketosis much easier. It really take the guessing game away.

A great gadget to dive into keto! Makes it possible for me to "fine tune" my cheatings especially when I travel and want to try some local food. Also useful for distance running, makes it easier to find the sweet spot between glucose and fat fueling on race days. Also, weightloss and a six pack come as a bonus :)

I check pretty much once a day. If I slip and it tells me I'm a 1-2, I get really motivated to "fat it up," and, if I get a 5-6, I am motivated to really stay keto. In other words, the keyto works to help keep your mind supported on this way of life. I've been keto exactly one year, and seen a lot of health improverments, more NSVs that pounds, which I will take any day.

So easy to use and so much better than pricking your finger. Great conversation starter when I take it out as well.

I love my Keyto so much. It helps me stay on track with my diet. I've already lost 27 lbs since April!

60 seconds warm up time is a bit annoying and I've noticed that it is very sensitive to how you blow into it. But, it has been helpful in helping keep track of my state of ketosis.

The Keyto devise is a very efficient and cost effective tool to measure your Ketosis situation. I'm a type one diabetic. My objective is to be on the front edge of Ketosis this device enables me to to assess my diet despite my defective endocrene system to achieve this result. I have checked my readings with the more expensive blood ketone measurement and I have found the Keyto device to be within the consistent accuracy I would expect. This device and the app have been carefully developed to provide excellent product.

Brian Hivon

I cant tell you how disappointed I would be, knowing that I did GREAT that day, and pee on my stick, and it didn't change color from 3 days ago! Thank you, thank you, THANK YOU for Keyto. What a difference it makes in effort, readings, and even your self esteem. I love this gadget. Im looking forward to the up coming launch on the food products. Thanks a bunch, guys

Patricia M.

The meter takes about thirty seconds to warm up, and teaches you how your body metabolizes the foods you eat. Even is you are not looking to lose weight this is a great way to find hidden proteins carbohydrates in foods.

First things first, this is an AWESOME product. I really love the feedback of knowing if I’m in ketosis (and if so, what kind of level I’m in). I’m really glad I bought it. My husband and I even have silly contests in the morning, competing to see who is more in ketosis...It keeps us more accountible on our day-to-day eating habits.
My only criticism is that it has a "contaminant error”about half the time, meaning I have to try several times to get a reading. Customer service was very attentive and sent me a new unit to try, which did indeed work better than my first one, but it will still take 3-4 tries each time to get a successful reading. More annoying than anything. Does it sour my impression of the product? Not really. Less gross than peeing on sticks, for sure ;)

This is without question, the single-most effective and EASY method to assist you with measuring your ketosis level; and in turn, put and keep you on the path to better health - including weight loss. Used several times daily, my Keyto Breath Sensor has had the greatest influence in terms of educating myself with respect to the impact various types of food/drinks have on ketosis, including the time of day it’s consumed and the complementary effect of intermittent fasting. Used wisely and regularly, the Keyto Breath Sensor will “leave you breathless” (pun intended 😉).