Lumen - Metabolism Tracker - Black

Name: Lumen - Metabolism Tracker - Black
Brand: Lumen
SKU: 6631051
Rating: 4 (23 reviews)

Model: MF-V2-01

SKU: 6631051

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General
- Brand: Lumen
- Model Number: MF-V2-01
- Product Name: Metabolism Tracker
- Color: Black
Warranty
- Warranty - Parts: 1 year
- Warranty - Labor: 0 years
Other
- UPC: 7290018116067

Lumen is the world’s first handheld device that lets you measure your metabolism in real time — using just your breath. With instant insights into whether you’re burning carbs or fat, Lumen helps you make smarter nutrition, fitness, and fasting decisions. Whether you're aiming to lose weight, boost energy, improve performance, or support hormone balance, Lumen acts as your personal metabolic health coach, offering tailored nutrition plans and expert coaching to reach your goals faster. Scientifically validated and built for everyday life, Lumen transforms how you understand and work with your body.

Real-Time Metabolic Insights: Lumen is the world’s first handheld device that measures your metabolism through your breath, revealing in seconds whether you’re burning carbs or fats. Using a built-in CO₂ sensor and flow meter, it gives you personalized, real-time insights, so you can adjust nutrition, exercise, or fasting for more effective results.
Lumen Membership: Enjoy your first month of Lumen membership free with your purchase — plus lifetime access to your metabolic breath results. After your free month, you may subscribe and continue to enjoy the full app experience according to a monthly plan of $19/month or our yearly plan of $180/year. This offer is available to new members only and can be canceled anytime.
Track the Impact of Your Habits: By tracking how your metabolism responds to your nutrition, fitness, sleep, and stress levels, Lumen reveals how your lifestyle impacts your metabolic health and guides you toward optimal habits for your unique body.
Unlock Key Benefits: As you start improving your metabolism, you’ll start to see the benefits. Manage your weight, boost fat burn, and reach your goals with more ease. Elevate your athletic performance, increase your energy, and enjoy sharper focus and mental clarity throughout the day. Plus, experience deeper, more restful sleep to help your body recover and perform at its best.
Transform Your Weight Management Journey: Lumen's weight loss track guides you to adjust your lifestyle and your macros to optimize fat burn and accelerate fat loss.
Daily Personalized Nutrition Plan: Each day, Lumen translates your breath into a personalized nutrition plan. It guides your carb, fat, and protein intake to match your metabolic state, goals, and lifestyle. Whether you're aiming for fat burn, energy, or recovery, your plan adapts in real time so you always know what and when to eat.
Maximize Your Fitness Performance and Training Results: Fine-tune carb and fat utilization for peak performance. Take a breath measurement before and after your workouts to pinpoint fueling for training and optimal recovery. You will also receive nutritional recommendations for fueling up pre-workout and recovery for post-workout.
Intermittent Fasting Game-Changer: Whether you’re new to fasting or experienced, Lumen lets you discover your optimal fasting and fat-burning window each day. You never have to guess again if your fast is effective or if you should break it to avoid muscle breakdown.
Menopause Support and Guidance: Hormonal changes during menopause can challenge metabolism, weight management, fitness, and energy. Lumen offers personalized nutrition guidance to help you adapt and maintain balance throughout the transition.
Sync Your Nutrition Around Your Menstrual Cycle: Track your menstrual cycle and gain insights into how to adjust your nutrition and lifestyle choices based on it, ensuring your metabolism is supported at every stage.
AI-Powered Food Log: Log your meals in a single snap on your phone’s camera or via voice recording for tracking and accountability that fits into your busy life. Lumen uses AI to scan the macros in your meal so you can easily track and log your target macros for the day.
Expert-Backed Guides and Videos: Gain access to and explore in-depth guides and videos in the Lumen app, which will help you learn more about how to optimize your nutrition, metabolism, and energy—all at your own pace.
Cutting-Edge Health Technology: Lumen is the world’s first handheld metabolic health tracker, giving you lab-level insights in the palm of your hand, so you make smarter choices for your body’s needs.
Award-Winning Science: Lumen was named a Time Best Invention and recognized for its innovation and scientific rigor by CNBC, CES, Men’s Fitness, and more. Lumen also partners with dozens of universities worldwide, contributing to groundbreaking metabolic research.
Scientifically Validated: Lumen is scientifically validated in peer-reviewed studies to meet the gold standard for metabolic measurement, ensuring accurate and reliable metabolic insights.
Long-lasting Battery for Daily Use: Lumen is powered by a rechargeable lithium polymer battery that can last up to 10 days on a single charge (depending on daily usage). No need to charge constantly, just breathe, track, and go.
Portable and Non-Invasive: Lumen comes in a sleek protective case, so you can slip it into your pocket, gym bag, or purse and track your metabolism wherever you go.
iPhone and Apple Watch Compatibility: Get your Lumen data at a glance from your iPhone or Apple Watch. You can also access a companion version of the Lumen App on your Apple Watch.
Android Compatibility: The award-winning Lumen App is compatible on Android devices running Android 8.0 and higher with Google Play services. The device must also support Bluetooth 4.0.
Extensive App Integrations: Automatically sync your health and workout data from your favorite apps through Apple Health, Google Fit, and Garmin. Extensive app integrations include Oura, Whoop, Polar, Fitbit, Myfitnesspal, and more.
Real-Time Metabolic Insights: Lumen is the world’s first handheld device that measures your metabolism through your breath, revealing in seconds whether you’re burning carbs or fats. Using a built-in CO₂ sensor and flow meter, it gives you personalized, real-time insights, so you can adjust nutrition, exercise, or fasting for more effective results.
Lumen Membership: Enjoy your first month of Lumen membership free with your purchase — plus lifetime access to your metabolic breath results. After your free month, you may subscribe and continue to enjoy the full app experience according to a monthly plan of $19/month or our yearly plan of $180/year. This offer is available to new members only and can be canceled anytime.
Track the Impact of Your Habits: By tracking how your metabolism responds to your nutrition, fitness, sleep, and stress levels, Lumen reveals how your lifestyle impacts your metabolic health and guides you toward optimal habits for your unique body.
Unlock Key Benefits: As you start improving your metabolism, you’ll start to see the benefits. Manage your weight, boost fat burn, and reach your goals with more ease. Elevate your athletic performance, increase your energy, and enjoy sharper focus and mental clarity throughout the day. Plus, experience deeper, more restful sleep to help your body recover and perform at its best.
Transform Your Weight Management Journey: Lumen's weight loss track guides you to adjust your lifestyle and your macros to optimize fat burn and accelerate fat loss.
Daily Personalized Nutrition Plan: Each day, Lumen translates your breath into a personalized nutrition plan. It guides your carb, fat, and protein intake to match your metabolic state, goals, and lifestyle. Whether you're aiming for fat burn, energy, or recovery, your plan adapts in real time so you always know what and when to eat.
Maximize Your Fitness Performance and Training Results: Fine-tune carb and fat utilization for peak performance. Take a breath measurement before and after your workouts to pinpoint fueling for training and optimal recovery. You will also receive nutritional recommendations for fueling up pre-workout and recovery for post-workout.
Intermittent Fasting Game-Changer: Whether you’re new to fasting or experienced, Lumen lets you discover your optimal fasting and fat-burning window each day. You never have to guess again if your fast is effective or if you should break it to avoid muscle breakdown.
Menopause Support and Guidance: Hormonal changes during menopause can challenge metabolism, weight management, fitness, and energy. Lumen offers personalized nutrition guidance to help you adapt and maintain balance throughout the transition.
Sync Your Nutrition Around Your Menstrual Cycle: Track your menstrual cycle and gain insights into how to adjust your nutrition and lifestyle choices based on it, ensuring your metabolism is supported at every stage.
AI-Powered Food Log: Log your meals in a single snap on your phone’s camera or via voice recording for tracking and accountability that fits into your busy life. Lumen uses AI to scan the macros in your meal so you can easily track and log your target macros for the day.
Expert-Backed Guides and Videos: Gain access to and explore in-depth guides and videos in the Lumen app, which will help you learn more about how to optimize your nutrition, metabolism, and energy—all at your own pace.
Cutting-Edge Health Technology: Lumen is the world’s first handheld metabolic health tracker, giving you lab-level insights in the palm of your hand, so you make smarter choices for your body’s needs.
Award-Winning Science: Lumen was named a Time Best Invention and recognized for its innovation and scientific rigor by CNBC, CES, Men’s Fitness, and more. Lumen also partners with dozens of universities worldwide, contributing to groundbreaking metabolic research.
Scientifically Validated: Lumen is scientifically validated in peer-reviewed studies to meet the gold standard for metabolic measurement, ensuring accurate and reliable metabolic insights.
Long-lasting Battery for Daily Use: Lumen is powered by a rechargeable lithium polymer battery that can last up to 10 days on a single charge (depending on daily usage). No need to charge constantly, just breathe, track, and go.
Portable and Non-Invasive: Lumen comes in a sleek protective case, so you can slip it into your pocket, gym bag, or purse and track your metabolism wherever you go.
iPhone and Apple Watch Compatibility: Get your Lumen data at a glance from your iPhone or Apple Watch. You can also access a companion version of the Lumen App on your Apple Watch.
Android Compatibility: The award-winning Lumen App is compatible on Android devices running Android 8.0 and higher with Google Play services. The device must also support Bluetooth 4.0.
Extensive App Integrations: Automatically sync your health and workout data from your favorite apps through Apple Health, Google Fit, and Garmin. Extensive app integrations include Oura, Whoop, Polar, Fitbit, Myfitnesspal, and more.

Whats Included

Device
Travel case
Charging dock
USB C cable
Quick Start Guide
Instructiona manual
Device
Travel case
Charging dock
USB C cable
Quick Start Guide
Instructiona manual

Q: Do you accept fsa payment for lumen trackers

A: undefined

Q: Which features are included in the free version (no subscription)? And which features do you get when you subscribe?

A: undefined

Customers are saying

Customers are delighted by the Metabolism Tracker's ease of use and sleek design. Users find the app simple to navigate after some use, and the breath measurements collected seem accurate. The device also boasts amazing battery life. Overall, customers seem to have a very positive experience with the Metabolism Tracker.

This summary was generated by AI based on customer reviews.

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

Rated 4 out of 5 stars
Helpful tool for weight loss/management
I was a bit skeptical about the Lumen metabolism tracker device but after about 1 week of use I have found it to be a very useful and promising device for weight loss and/or weight management - I even lost a couple pounds during my first week of use. I love that the app determines your daily macro intake based on your breath measurements and provides suggested meal options as an added bonus. I don't know enough about the science of the Lumen device, but, for me, the breath measurements collected seemed accurate. Additionally, the real time data from the daily measurements boosted my motivation to put in the work each day to meet macro goals. (It was almost like a game to me.) Typically any adjustments to eating habits is tracked by weight loss which doesn't provide instant results to gauge your progress. The measurements taken with the Lumen device allows users to see how their body (metabolism) responds to various situations throughout the day, providing real time results, with a primary focus around meals, workouts, fasting, and your sleep. The device is very easy to use and the Lumen app, after some use, is simple to navigate as well. Another great feature of the app is that it allows for one to connect or sync many health tracking apps. Unfortunately Samsung is not one that can be linked, which is what I use, and that was very disappointing considering that it is a major brand. Most of my experience using the Lumen app went smoothly, but it was a bit buggy at times. There were several times that the search feature for logging meals would freeze and that often resulted in me having to restart the app. There were also a couple days that outages within Google seemed to really affect the functionality of the app too. The barcode scanner for logging meals was surprisingly quick and accurate, and I did try to utilize that often. I was also pleased with the amount of food items already included within the database as well. There are many features with the app that should satisfy most users’ needs. Between the numerous features and the personalized plans the membership fee seems very reasonable. Overall, I have been mostly impressed with the Lumen device and its app. For those looking to try something different, or for those who need more instantaneous progress feedback, the Lumen metabolism tracker just might be the missing piece in your health journey.
Posted 6 months ago by KMiller
Rated 4 out of 5 stars
A Helpful Tool for Carb Awareness, but Not a Quick
A few years ago, I was diagnosed with Type-2 Diabetes. Fortunately, I’ve been able to manage it quite well by limiting sugar intake along with medications. Since I’ve gotten the A1C level in check, the next step in my health journey is to lose some weight. While the Lumen is not marketed as a weight loss device, my hope is that it will help me with carb awareness and help to encourage me towards better eating habits for the long term. The Lumen device is a very premium-looking piece of technology. It comes in an impressive black box and comes with its own charging stand and travel pouch. The app for Lumen is quite nice, too. Downloading it is the first step in setting it up. The app will guide you through the set up process and train you in how to measure your breath with the device. Lumen does require a subscription ($19/month or $180/year) for ongoing use, but it comes with one month free with the purchase. In a world that seems to have a subscription for nearly everything, I wasn’t surprised about this added expense, but it was disappointing. Since this is a health-tracking device, I would put it in a similar category to something like a gym membership, which requires a monthly fee, but I think it could be lowered quite a bit. As a means of comparison, I’m able to monitor my glucose and track it through an app without an recurring fee. I did have to purchase my glucose monitor, but the app came with no strings attached. So, while I accept there is an ongoing fee for this type of system, I think the cost could be lowered. Using it in practice is somewhat of a feat. First of all, you have to discipline yourself to use it the same time everyday. While having this sort of requirement is helpful for forming good habits, it’s still a hurdle to overcome. Second, the breath capturing process is a little different than I expected. You have to take a slow breath in, hold it for ten seconds, and then exhale slowly. This could be very difficult for some people who have breathing deficiencies. I found it a little difficult at first because the app guides you not to do it to fast or hard. It gives you an on-screen prompt and tells you to keep the ball inside a certain perimeter while you are completing your breathing exercise. It took me a couple of tries to get it just right. So, like I said, discipline is key with this device. For me, I was using Lumen as a supplemental device to help kick start weight loss and monitor my carb burning. I feel that it is helping by providing more information to me, but I question how accurate it is since you have to do the testing ‘just right’ every time you do it. Plus, I was expecting information that was more specific than simply burning fat or carbs. That said, I could see Lumen being very useful for people because the full benefit comes from committing to the daily routines and guidance, not just using the device. Pros: Easy to use Device feels premium App guides your habits Can help drive smarter decisions if you’re looking to optimize energy levels, fat burning, or diet timing. Cons: Requires discipline to make sure you are doing it the same time everyday at the right times for accuracy Device gives you a ‘rough estimate’ of fuel usage, but it’s not as precise as clinical testing (can’t replace that) Not a ‘magic bullet’ for weight loss - could confuse some people expecting that
Posted 6 months ago by nickcal
Rated 4 out of 5 stars
Robust data and very helpful for health journeys
PROS: * Very nice quality * Robust app (so many links, videos, stats, and data) * syncs with other health services (i.e. Apple Fit, Fitbit, Garmin) * Easy to use * Comes with an included travel case CONS: * Another subscription service ($19/month or $180/year) * May not separate itself from other smart wearables enough for some If you've come across this product, you might be wondering what it does. I certainly was. According to Lumen, they've created this device to help people improve their metabolic flexibility, which can lead to better workouts, improved sleep, easier weight loss, and an overall happier, longer life. While this may or may not appeal to you, it certainly appeals to me. As a tech lover, I've found that as I age, it takes more effort to maintain my health (I wish it were the other way around). Sleep has always been a challenging aspect for me to manage consistently, so anything that can help me improve my routine is a welcome addition. So far, using the Lumen device has made me more aware of what I eat, how much I move throughout the day, and how I prepare for sleep. I own several health-monitoring devices, including a smartwatch that I wear nearly every day to track my workouts, stress levels, and sleep. Initially, I struggled to see the main differences between the Lumen and my smartwatch in terms of health monitoring. However, with the Lumen, you blow into the device, which provides more detailed information than just your heartbeat. It uses a CO₂ sensor and a flow meter to measure the CO₂ concentration in your breath, offering instant feedback on whether you're burning carbohydrates or fats for energy. This is something a smartwatch currently cannot do. Using the Lumen before workouts or after exercise can help you understand how your body burns fat. Additionally, it provides daily nutritional goals, which can be beneficial for those who struggle with dieting, as many d The presentation of the product is impressive. As soon as you open the box, you can see the quality and care that went into creating it. Priced at $199, it's reasonably priced, but considering its features, the cost may deter some potential buyers. After all, for a little more, you could purchase a nice smartwatch with various health features. On the other hand, the app is well-designed and far from basic. It offers numerous links and a wealth of information and articles to support your health journey, reflecting the careful thought put into the app, much like what you would expect from a membership service. However, this is where some people may lose interest. Yes, there is a subscription for the app and the data collected by the Lumen device. In 2025, many of us are overwhelmed by subscription services and hesitant to add more. I feel the same way. When you consider that a gym membership can cost around $20 a month, it's hard to understand why connecting to an app costs $20 a month (or $180 a year). As with everything, the costs add up. When you factor in the $20 monthly subscription along with the $200 for the device, it becomes quite an investment. However, if you get into it and use it daily, I can see its value. Fortunately, I may not need to stay on top of my health as much as others, so using it daily isn't something I find myself doing. Overall, I'm supportive of technology that helps people maintain their health, and Lumen is certainly doing that. While I may not invest in a membership, it's available for those who will find it helpful daily.
Posted 6 months ago by Bryan