foodmarble aire package contents

When I was given the opportunity to review the FoodMarble AIRE Digestive Tracker with FODMAP Test Kit, I was pretty excited. For the past few years, I have suspected that I have issues digesting lactose, but I haven’t really been formally tested. With this device, I could finally find out if there is indeed something wrong.

What is the FoodMarble AIRE digestive tracker

So what is FoodMarble? It’s a tiny square device that fits in your purse or pocket and measures the hydrogen in your breath so you can see how well your food is being digested; certain foods can create a build-up of gases if they’re not well-tolerated. Knowing this can help you determine which foods are most compatible with your body in order to improve your gut health and make better food choices.

foodmarble aire device

It connects with a mobile app to initiate and record a breath test as well as let you keep track of what you eat, any symptoms you might have and when, stress, sleep, and challenges relating to the FODMAP Test Kit or custom ones you set out to do.

The kit comes with four FODMAP tests you can use to analyze how well you digest lactose, fructose, sorbitol, and inulin. Each packet has a powdered substance to mix with water and drink during the test period, then take continuous breath tests to see how your body digests the substance.

foodmarble aire formats packages

Set up of the FoodMarble AIRE

Naturally, I had my eye on the lactose test. But first, it was time to set up.

It’s super easy: just plug the device into its USB charger and charge it up, then download the app, create an account, and pair. It was ready to go pretty quickly and the battery of the unit lasts quite long—after about three weeks, it was at about 50%.

To take a breath test, select the option in the app, turn the unit on using the side power button, and wait until they pair and the unit warms up. After about 15-20 seconds, you will be advised to breathe in for three seconds, then place your mouth fully over the mouthpiece and breathe out for five seconds; a progress ring counts up as you do this and advises when complete.

I love the little carrying case for the device so you can throw it into your purse or briefcase when going out to eat. I did get a message a few times that condensation was detected on the sensor so it is pretty sensitive and you’ll want to keep it protected at all times.

foodmarble aire and case

The app is pretty easy to navigate, similar to your typical fitness tracker app, with sections to record your meals, stress, and sleep, though you have to do all of this manually (it would be amazing if this tracker could integrate data with another app, like Fitbit!).

foodmarble aire fermentation scoreI took a quick breath test to check how my levels were and they were “OK” and rated “6.0” which meant that what I had eaten hadn’t yet been fully absorbed in my gut and was fermenting. It noted to add my meal log to help provide some insight on what might be causing the fermentation. A second time, I got a 1.5 “low” score, which said the food I’ve eaten has been already fully absorbed before my colon, where fermentation takes place, has not yet reached my colon, or has reached my colon but the bacteria I have hasn’t yet fermented it. It’s tough to tell what this means by just the reading so to get the most out of the device, it’s advisable to log everything you eat as well as any time you have a symptom. The three main symptoms listed in the app are bloating, abdominal pain, and flatulence, but you can also add your own custom symptoms, like diarrhea, dizziness, or even constipation. For each symptom, rank its severity on a 10-point scale and log roughly the exact time you experienced it.

I continued to do random tests to get the hang of how it works as well as log my meals which is done by ingredient, not necessarily food. When I had homemade pizza for lunch, for example, I added bread, bacon, mozzarella cheese, tomato puree (sauce wasn’t an option), red bell peppers, red onions, and tomatoes. Pepperoni wasn’t on the list. There were a few other times when I couldn’t find the right food match and had to sub in something else or leave it out of my log altogether, like chicken wings, pecans, and chia seeds. In these cases, you can add the food and portion manually, but it doesn’t seem to foodmarble aire food loggingcount for much since the app does not recognize the food’s FODMAP content anyway. It might help the company, however, with further additions and updates.

What’s really neat about the food log is that it also reports the FODMAP content in each meal, so for the pizza noted above, the app showed that it was high in inulin and FOS and low in lactose and fructose. It also provides the basic nutrition information of what you eat, though this can vary dramatically depending on how accurately you log every single ingredient in what you eat.

For the most part, my levels were low or OK. But now it was time to put things to the test.

The FoodMarble AIRE test

Note that you need to really invest some time to do a test right, so don’t think you can grab this device off the shelf, down a drink and get a magical answer in an hour. There are a number of pretty strict rules to follow for completing a test if you want accurate results, and you should wait 3-4 days in between tests. Naturally, as mentioned, I was anxious to learn about how my body responds to lactose so opted to do that test first (I later tried the Inulin test as well).

foodmarble aire inulin test

Fast for 12 hours before doing a test so your stomach is as empty as possible. Overnight is the best option—I fasted from 10:30 p.m. and started my test at 10:30 a.m. the next morning. First, take a baseline breath test. Then mix the powder, which, in the case of the lactose one is equivalent to one large glass of milk, into a cup of boiling water then down it as quickly as you can. The instructions say to try and do it in two minutes but it took me at least five.

foodmarble aire challenge resultsKeep the FoodMarble AIRE close by and do a breath test every 15 minutes for the next three hours. Yes, you read that correctly. (So effectively, you’ll be fasting for 15 hours total). I kept it with me in my home office as I worked away, and the app conveniently shows a countdown timer. If you leave notifications on, one will pop up to tell you when it’s time to take another breath test.

It didn’t take long—under an hour—for my figures to shoot up to High levels. Not to mention the intense symptoms started. It was an uncomfortable morning, to say the least. But after the three-hour period, I got my result: an 8.7! It noted that there was a “significant rise in hydrogen levels during the food challenge,” which confirms that lactose did not absorb well into my gut. A few weeks later, I tried the Inulin test and the results were markedly different: no digestive issues detected.

Throughout the testing, the app provides useful tidbits of information after each breath test, like what foods typically contain a lot of lactose and how you digest lactose relates to how much of the enzyme lactase you have. The result also showed a summary of the readings along with the start and completion time. And it provides more details to help me make better food choices, including advising which foods are high in lactose, like whole milk, ice cream, and cream cheese and alternatives that would be easier on my stomach, like almond milk, sorbet, and hard cheeses.

foodmarble aire app info cardWhile the kit comes with the four tests, you can also buy FODMAP tests separately if another family member wants to try the process. It’s advisable that only one person uses the device, or at least only one person at a time.

You can also do custom tests without the packets by following the same set of rules: fast for 12 hours, consume the one questionable type of food, like a piece of wheat bread or an apple, then take breath tests every 15 minutes for three hours.

If you simply want to check in every day to see if you notice anything amiss or can determine patterns based on symptoms, high levels of fermentation, and what you eat, set the app to send reminders every few hours for you to take a breath test—it’s recommended to aim for about 10 tests per day, so one every hour or two.

A few additional things to keep in mind: you need to keep the device away from products that contain silicone, like hair conditioner or some cosmetics as they can damage the device’s sensors. Try to steer clear of alcohol during testing periods, or at least take it into account when doing breath tests as alcohol will result in exaggerated fermentation scores. If you smoke, make sure not to do so shortly before using the device as this can impact the reading as well. Finally, while you can wash the mouthpiece, make sure to remove it from the main housing before doing so. And always keep it stored in the protective pouch.

foodmarble aire demo

Bottom Line 

While the FoodMarble AIRE is ideal for those who think they have issues digesting certain foods and want to learn more, it’s a handy device for anyone who wants to monitor the foods they eat and discover if there’s an issue they might not have realized. Maybe, for example, you notice you get bloated every so often but never made the connection that it could be inulin or fructose causing the problem. This can prompt you to eat foods with less of that substance and potentially make a huge improvement in your digestion.

For me, the FODMAP test proved something I had already suspected—that I don’t digest lactose well. I will now be making changes to my diet and testing specific dairy foods to see if some are worse then others.

Check out the FoodMarble AIRE at Best Buy

Christine Persaud
With 20+ years of experience in trade and consumer tech journalism, I have covered the tech space since before social media was a "thing" and the smartphone as we know it was even invented. Writing for various technology, lifestyle, and entertainment sites, I have covered and reviewed hundreds of tech products, from home appliances to wearables, fitness tech to headphones, TV entertainment products and services, and more. I'm also a passionate foodie who loves to cook and bake, a TV show fanatic (happy to give what to watch recommendations!), and proud mother to a 12-year-old son.


  1. My favourite feature is app connectivity to guide you easily through the whole process and display data easily.

  2. i think the battery life is the best feature. Nothing more frustrating that having a dead device after only a few uses/days.

  3. I like that you are able to track your reaction in a super quick and convenient way. Amazing to identify triggers and course correct

  4. The ability to identify which foods affect your body negatively is definitely the most helpful. It can guide you to make more positive choices. What a useful product!

  5. The feature of this Digestive Tracker that I think is the most helpful is the instant results feature.

  6. I would love to figure out which foods I am sensitive too (my fav feature) – would be interesting to see if any are linked to my gout issues.

  7. I like that it’s portable and you can take it out with you where ever you go to eat. And the food log is important

  8. I like the fact it comes with a FODMAP Test kit; the accuracy in checking what affects your body is great!

  9. I like that it’s portable and you can take it out with you where ever you go to eat. I dine out a lot…

  10. The instant results are great! This would help me identify if certain foods are causing digestive symptoms.

  11. I like that it’s portable and you can take it out with you where ever you go to eat. Plus love that you can find out foods you cannot digest well without going to a doctor!

  12. The instant results are great! This would help me identify if certain foods are causing digestive symptoms.

  13. My son in law has digestive issues, I think this would be a great way for him to track them. The instant results would be most helpful.

  14. I would love to figure out which foods I am sensitive too (my fav feature) – would be interesting to see if any are linked to my gout issues.

  15. This is so interesting, I would love to figure out which foods my body is reacting negatively to so this is my favourite feature. Sounds like you would really have to set aside time to figure it out.

  16. For me, I think it would be a handy device to monitor the foods I eat and discover if there’s an issue I might not have realized. sometimes, I feel bloated after certain meals, or some mild indigestion. sometimes i feel tired after eating certain carbs. I also love that i could take this with me anywhere.

  17. The instant results are great! This would help me identify if certain foods are causing digestive symptoms.

  18. Thank you to Christine for a very well documented description of how this device works. My favourite part of this device, is the size & portabiity of it, and the best is that one can personally analyze themselves. ( using this kit as an informational tool, but not using this information as a medical diagnosis) One must still be alert that if they are having significant issues to still seek advice from their family doctor and if not happy with him/her, to ask for a referral to a GI specialist. I along with another good friend have FODMAP issues, so I will be sure to investigate this device further.

  19. I like that it’s portable and you can take it out with you where ever you go to eat. Plus love that you can find out foods you cannot digest well without going to a doctor!

  20. Amazing article Christine of this “Digestive Tracker”. Well explained and easy to follow. I love that the results are instant. I have had many tests done for my digestive problems and have tried some different medications, one being medication that emptied my stomach quicker to see if it would help. It really didn’t. I have a chronic cough and I am sure it has something to do with my stomach, but I don’t have digestive reflux. It would be great to know what it is finally and what I can do about it.

  21. Th FoodMarble AIRE sounds really great. I’m sure I have a lactose-intolerance but it’d be great to know for sure, and to check for any other intolerances. I love the small size and instant results.

  22. I love the fact it comes with a FODMAP Test kit; the accuracy in checking what affects your body is great!

  23. I have many gut concerns and take CBD oil – but would rather solve the problem than sugar coat it- It is great to get instant results and keep a food log.

  24. I like that the FODMAP test kit comes with 4 packets of lactose, fructose, sorbitol, and inulin so you can measure how well your body digests these foods.

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