Nebula Digital Ketone Breathe Analyzer with 10 Mouthpieces, Portable Ketogenic Diet Breathalyzer, Fast and Accurate Ketosis Measurements, Supports Weight Management

Arrived in a small well packed box. Comes with a small bag to store and clear instructions. I bought some strips originally and couldn't understand why I got exactly the same reading each time, low.. Took my rate as it arrived and really boosted my confidence as I have been following the diet religiously, and it seems it is working. I didn't rate the accuracy as I don't really know the details yet, but I think this is an excellent piece of equipment, which has made me feel way more confident about the diet...

Much easier to use. Saves having blood tests, and as long as you follow the instructions, it's good and accurate

I changed to Keto before Christmas 2019 and was originally using keto test strips but as the new book I have said, they are not accurate. The book recommended a breath analyser and I chose this one on Amazon.Very quick delivery, very easy to use and definitely accurate. What I really like is that once you blow into the mouthpiece if you have ketones in your system it almost immediately beeps to tell you and then gives you the level via the reading. If none, then no immediate beep.Great instructions and definitely follow them to the letter, i.e. one word of advice, definitely do not start to be breath until the system tells you to or you may get a negative reading - the screen says wait, so do! I have made that mistake a couple of times.Buy the Nebula, you will not be disappointed.

Works most of the time; however the readings seem to be somewhat random. Also, the screen has arrived slightly damaged.

I initially had some issues with this device but checked online and realised that I was using it incorrectly. Rather than taking a deep breath and blowing you just need to empty the air you have in your lungs. Using this, carb tracking app and sticking to a strict 20g max diet has helped me lose 10lb in the first week. Of course that is mostly water but I am at the stage now where I don't feel hungry all the time and when I do it it's all prepared by meal. . .no more processed rubbish.The device is a little delicate feeling, I would have preferred for it to be made from a more robust plastic and time will tell to see how long it lasts.***Update this has not started to cycle through the count down numerous times before giving the indication of when you should blow into it. When you do blow into it, it registers complete almost straight away which is not correct. Really is a piece of junk, which is a shame as initially it seemed to do the job. I would avoid buying this.*******Further update, I have come off keto for Christmas, after eating normally for a few days, I decided to try this tester again and it came back that I was in Starvation ketosis. . . Piece of junk, don't buy.

Nebula's Ketone Breath Analyser is excellent. My partner is on a medically prescribed Paleo-Ketogenic diet, therefore so am I...! It's really important that we monitor her ketosis state, as from a medical perspective the removal of glycolysis has been really important for many of her illnesses. We've been on the diet for 16 months, but have never properly explored out carb tolerance levels. Ketostix became unreliable - but then my partner's doctor recommended this - and it's brilliant. Easy to use, accurate (as her levels are different to mine, as we would expect) and really good value for money. Great - highly recommend this.

I'm going to give this a 5 star review, however, it's mainly down to ease of use and price. It lets itself down slightly on accuracy, but a lot of the time that can be more to do with what the user may or may not have recently consumed. For someone just getting in to keto, like I was back when I bought it, it was definitely a good investment and a handy to use implement to get a good *gauge* of where you are, not 100% accuracy.

I started to use it on the 10th day of Keto and thought the results were accurate as I was already in ketosis and loosing weight. But when I used it after having dropped the diet and being on a carb-intense diet for about two weeks, it showed almost the same results, something between 1.3 and 2.5 constantly. It was obvious that I was not in ketosis. So not really sure about the accuracy. Maybe mine was malfunctioning.