Ketonix Software for measure and analyze breath ketone data from a Ketonix® Bluetooth® device.

The charts will display a trendline, moving average (MAV) and a possibility to add annotations for lifestyle changes.

Here are some video guides demonstrating functions of the app.

Register Device
Create Profile
Diet Workflow
Import Recipe

Privacy Policy is found at

What’s New

Version 2.0.4

Bugfixes drawing charts. X-axis dates should now work as expected. Y and X axis labels should now indicate variables drawn in the charts.

Ratings and Reviews

1.7 out of 5
9 Ratings

9 Ratings

Burnt out on greed ,


I purchased the Ketonix device (over $200) a few months ago and was FINALLY able to figure out how to use it with the old Ketonix app without having to create an account, now there is a new version of the app as of June 2020 that REQUIRES you to create an account, and per their privacy policy, allows them to collect personal private information on the user and this collection is “mandatory”. I DO NOT want my information collected or shared...I just want to keep my personal data (privately) on my phone, which is how it was when I bought the device. I sounds like this app developer is looking to turn our personal information into another revenue source like many other unethical apps do. Now that I updated the app (that now requires a Mandatory account creation), I cannot go back to the old private version of the app. This is NOT what I paid for and would either like them to allow me to return my “Ketonix Bluetooth Smart” for a refund or allow for data storage locally on my device ONLY. Some developers forget that growing numbers of people a finding data collection and sharing to be unethical. Don’t forget that I PAID for this device and service so it is not just another “free” app that pays for itself off of collection and selling personal users data. So, in conclusion, I strongly advise against purchasing a Ketonix device until I’m assured that I do not have to give personal information to a company that did not require it until this past update. I am a strong advocate for the GDPR. PLEASE feel free to contact me for resolution and or clarification on your privacy practices.

TheRealTomRose ,

Not usable

Wow. I wish I had read these reviews before purchasing. Spent $100 for an app that is basically unusable.

I was able to get this to display some data from a reading, but I have 0 confidence that it means anything reliable.

There are no obvious units, measurements are highly erratic and change by a factor of 2 in back to back measurements. It says ppm in one place, but that measurement doesn’t match with the chart which is unit-less.

There is no way to view saved data after 7-days. The app is full of greyed out buttons. Such as the “custom” button on the analysis tab that looks like it might show past data but instead does nothing. There is no place to perhaps upgrade the setting or something.

This app is a prototype at best for proof of concept only. Not for use by a paying customer.

I’m a scientist and am accustomed to using technical equipment, so I am willing to deal with somewhat inscrutable equipment, but this doesn’t even allow me to get to the point of useful data in the first place.

USCoisa ,

Pay for hardware get lame app

Wish I would have known I needed this app to make the hardware work. More accurately, I wish the app functioned better than a grade school coding project. Takes 5-10 minutes to connect, gives lousy interpretation of ketosis readings. Reverted back to peeing on a stick. The whole point in investing $100+ was to get precise readings to be able to know the immediate effects of specific changes in diet and exercise, that’s what the site sold me on when I bought the hardware. Disappointed, save your money, or maybe the company will eventually take some of the revenue and invest it in a high school kid to recode the app.

App Privacy

The developer, M Object Oriented Software Engineering AB, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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