The only reason I haven’t given it 5 stars is because I cannot independently verify to date that the thing is accurate. But it IS consistent, and the inference based on historic experience with the keto diet and testing is the data is accurate "enough." I am a believer that in theory, the breathalyzer is more accurate than test strips or even blood sampling. Maybe once out of every ten pairings the thing doesn’t exactly pair correctly with the app and I’ll need to restart the app. Never even thought about it. Any ketone breathalyzer will take time before you can use, needs to calibrate the baseline air, among other things (Keyto refers to heating element rising to 400 degrees).
Bottom Line: Yes, I would recommend this to a friend
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