KETONIX® Green Professional


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This is the Professional version of KETONIX® Breath Ketone Analyzer designed for use with a mobile device. Measures user interface is available in the Ketonix App (iOS and Android). Breath ketone levels are indicated in PPM.
An optimal tool to find out how lifestyle changes affect your ketosis.

Note: Worldwide shipping


  • Measures breath ketones, a real-time indicator of ketosis.
  • Reusable, measure thousands of times, at a one-time cost only!
  • Your Ketonix and software upgrades are a one-time cost, with no additional fees.
  • The sensor does not need to be replaced after X times, it is made for years of use!


  • No calculation is needed to know your ketosis. Breath ketones are proportional to the breakdown of fat into ketones by the liver.
  • Measures are saved and can be viewed to evaluate lifestyle changes.
  • Non-Invasive,  Class I Medical Device registered at Läkemedelsverket (SE).
  • Bluetooth communication, USB communication, and WiFi communication.


  • App with Support for English, French, German, Spanish, Swedish, and Finnish.
  • User Manual (EN).
  • Email Support, English, and Swedish.
  • 30-days Money Back Guarantee (shipping charges are non-refundable).
  • VAT is added for all orders shipped within the EU.

Ketonix® measures breath ketones which is a real-time indicator of ketosis. This is more accurate than blood and urine measures which only indicate excess ketones.
This version of Ketonix® Breath Ketone Analyzer is designed for use with a mobile device (iOS/Android) or desktop computer (Mac OS or Windows).

Desktop systems such as MacOS and Windows can use the online measure page here (saving data to your account) or desktop measure via USB (not saving data, login not required) 

Measures and charts are easily available in the app. Breath ketone levels are indicated in PPM. This is an optimal tool to find out how lifestyle changes affect your ketosis. A perfect choice for anyone who is adopting a Paleo, Ketogenic, or Low Carb diet.

  • Includes Ketonix App, free download at Appstore, and Google Play.
  • App Features: All included, all features within Measure, Analysis, Diet, Import Recipes, and Lab are included.
  • The Bluetooth Smart protocol means you do not have to pair it to use the app. Just open the app, tap connect, and go!

The new app is available for mobile devices like smartphones and tablets running iOS or Android supporting Bluetooth 4.0 LE.

Included App Features:

The Home screen contains guides and tips easily accessible. Here you register your device, select/manage profiles, and synchronize and export data. There is also a blog that keeps you updated with news.



In the Profile tab, it is possible to add several profiles. It's wise to use one profile per person that measures, this way the data is separated. There is no limit to how many profiles can be created.
Each profile can have its preferred language set in the app. Each profile can also be linked to an account on, this enables integration with other systems such as Heads Up Health and enables users to participate in studies or be coached remotely.



The Sync tab enables you to synchronize data to and from your account on It's a handy function when using multiple devices.



In the Data tab, you can export your logged data within a time range. The exported file is a CSV formatted file that you can use to do serious number crunching in your preferred spreadsheet/analysis software.



The Measure tab contains a number of tabs to log additional values to compare to when performing analysis, of course .. this is the tab you use when testing your breath ketones!
Use the top row tabs to log additional data.  There is also a "Markers" tab, which contains (for now) calculators for body fat percentage and BMI, in coming releases it may contain other calculations too.
It's easy to log additional data, set the date and time, set the value of a variable then tap on Save. All variables that are set to -1 are not logged.



In the Analysis tab, you typically check your breath ketones (ketosis) trend. This is where you can compare your breath ketones to other logged variables. The time frame is easily set by using one of the Presets: Today, Yesterday, Last 7 Days, Last 30 Days, This Month, Last Month, or A Year Back. It is also possible to set a Custom time frame for comparison. 


When analyzing your data and you find some interesting correlation (or not), it is easy to tap on Create and make an experiment from the Analysis screen. This is a simple way of documenting data and adding some information to the time frame and the variables. The experiments are easily accessible in the Lab tab.




In the Diet tab, you will find many interesting features. The first screen you see contains a list of guides for the most common tasks. It also has a Diet blog where we share some of our diet secrets and tips.


The first action you should take is to tap on the Keto Calc tab. Set YOUR values and tap on Calculate. This will calculate your macros just like nutritionists would do for somebody that needs therapeutic ketosis. When the result is presented you could easily either create an experiment or a meal with those parameters. For example, you could experiment with the number of meals per day, or you could alter the ketogenic ratio. Using the create experiment you could set a time frame in the future when you would execute your experiment. If you choose to create a meal, you will be directed to the meal editor where you can compose your own recipes from food items from the USDA or Swedish Food Agency data. These databases are included in the app. By using the meal composer you will get recipes that are personalized just for you. When you compose a meal you will instantly see the total ketogenic ratio of the meal.
If your goal is weight loss, the P:E ratio might be the tool to use. A high ketogenic ratio will help you to create ketones from food while maintaining your body weight (this is what the "ketogenic diet" was designed for). A higher P:E (Protein to Energy ratio) will make your body use the body fat to make ketones. As fat has a high energy density, the ketogenic ratio, and the P:E ratio will almost be opposites from each other.  Read more about the P:E ratio at Ted Naiman's site or at his book site A higher protein diet and low in carbs and fat is not a new idea to burn stored energy, it's been used by bodybuilders for many years.



P:E Calc 

The P:E Calc is a handy calculator to see if the food you will eat has a Protein to Energy ratio with the goal you have, weight gain or weight loss.



The Meals tab enables you to create a meal (recipe) with your macro needs. By adding food items and amounts you will instantly see how much of your macros are fulfilled by the meal. You will also see the ketogenic and P:E ratio in the process. The searchable database comes from the Swedish Food Agency and USDA. When you composed a meal you can save it into your library of recipes. When you cooked it, take a photo and update the recipe with it. You can also import recipes in this view.


Import Recipe

If you are out of inspiration, there are recipes to import from both Ketonix and Tap on the Meals tab, then Import Recipe, and you will see a list of free recipe collections to choose from. Selecting one of them will show you the recipes in that collection. Selecting one of those recipes will give you an option to import the recipe to your collection. When the recipe is imported you can edit it and adjust the macros and/or add food items to it.



If you plan your day with several meals, you can combine your recipes into menus. Tap on Menus and then tap on Create Menu. By giving it a name and then selecting the meals in the order you want them on the menu, you created a menu. The menu can then be used to create a paper version of the menu to put on the table, a shopping list, cooking instructions, and a list of the summarized nutrients for the menu. All of this information you can export to PDF for sharing or archive.



The Lab tab is a place where you have your experiments easy accessible. An experiment consists of an experiment name, time frame, variables (1 or two), hypothesis, confounding factors, result, and a conclusion. Another way of looking at it is that it is a structured way to add notes to a period when you made a lifestyle change. This makes it easy to compare different changes and easily access what works for you. You can also export the experiment as a PDF to archive, print out or share.




  • Indicates your ketone production by analyzing your breath.
  • A reusable instrument that can be used thousands of times, it is made for years of use.
  • Powered by a USB port 5V 1A, USB charger(not included) 5V or a 5V battery(not included) with a USB port.
  • The fixed mounted USB cable is used to power the device, and for USB communication.
  • Application indicating acetone in PPM.
  • Clients are at the moment available for macOS, iOS, Windows, and Android.
  • Record breath ketones locally on your mobile device smartphone/tablet and/or to an online account (
  • You can anonymously contribute your data to studies of ketogenic diets (Optional).
  • The Mouthpiece can be easily removed and cleaned. An extra mouthpiece is included. The mouthpiece has three different settings that can easily be changed to adjust the resistance.
  • The Software provides profile management to enable several users to share a device using personal mouthpieces.
  • Weight: 70 gr (total weight of 200 gr).
  • Size: length 130 mm (with USB cable 1080 mm), diameter 25 mm.

What is included
Ketonix® Green Professional, an extra mouthpiece, a manual, and a KETONIX zipper etui.



If you have type 1 or 2 diabetes: You still need to check your glucose. 
This device is a complement but does not replace your glucose or beta-hydroxybutyrate measuring devices.
We also recommend you consult your doctor before doing dietary, medical, or lifestyle changes.

Below is a reference chart for typical PPM ranges:






Units in box: 1


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KETONIX® - Breath Ketone Analyzer - The Original Biohackers Choice Since 2013

​ KETONIX® is a Non-Invasive Class I Medical Device, registered at Läkemedelsverket (SE).
KETONIX® is a Registered Trademark in the US, Australia, Europe, and other countries.
Ketonix AB is a Swedish Registered Company - VAT SE556443379401

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