It took a while but it helps guide and…
It took a while but it helps guide and motivates you
Marie A Smerjac
United States
Showing 50 of 50 reviews
Finally understand my body's fat burning!
Following strict diets used to feel like guessing in the dark because I never knew if my body was actually burning fat or storing it. Tracking calories alone did not give me clear answers about my metabolism. Using the Lumen Metabolism Tracker changed everything. Just breathing into the small device each morning tells me instantly whether I am burning carbs or fat today.
Kevin R. Vance
It Takes the Guesswork Out of My Meals
I use Lumen each morning before breakfast, and the breath reading helps me understand how my body responded to the previous day’s meals and exercise. Its daily food guidance has made meal planning simpler, and I’ve become more aware of the habits that affect my energy. The device is quick to use and keeps me accountable
Lauren Mitchell
I cannot use English version
Yok
Thailand
Misleading subscription pricing and a complete failure to address a formal complaint
Rating: 1 star Misleading subscription pricing and customer support that won’t address the issue I own a Lumen device, and my experience attempting to renew my membership has left me seriously questioning the company’s pricing transparency and customer service. Lumen’s official membership renewal page displays four offers: * Duo Monthly: $38 crossed out, replaced with $1 * Duo Yearly: $456 crossed out, replaced with $1 * Reactivate Lumen: $19 crossed out, replaced with $9 * Annual Membership: $228 crossed out, replaced with $80 All four use exactly the same pricing format, clearly suggesting discounted membership prices. Nothing indicates that the $1 Duo offers are actually upgrade fees. I selected Duo Yearly, advertised at $1 instead of $456. The next screen, headed “Get Duo Yearly!”, explicitly confirms: “Renews: Every year” “Members: 2 members” “Price: $1” “Payment Method: ShopPay” Yet directly underneath, the same screen states that I’ll be charged $240 immediately, with annual renewals also costing $240. Lumen’s own confirmation screen explicitly identifies the annual membership price as $1 while simultaneously stating that it will charge $240. When I questioned this, customer support repeatedly insisted that the $1 was merely a one-time fee to upgrade from an Individual to a Duo membership. But that explanation doesn’t make sense. The advertised Individual Annual membership costs $80 (reduced from $228). Adding a $1 upgrade fee doesn’t produce $240. Meanwhile, the Duo Yearly membership supposedly costs $456 annually, yet Lumen identifies $240 as its actual annual charge. There are three different prices associated with the Duo membership: $456, $1 and $240, and $80 and $228 for the single membership, with no clear explanation of how they relate. I also don’t have an active paid membership to upgrade. After several exchanges with support, I submitted a detailed formal complaint with screenshots, raising concerns about potentially misleading pricing under Australian Consumer Law. I specifically requested escalation to senior customer experience management and the person responsible for Australian consumer compliance. After more than a week without a substantive response, despite following up by email and through the app, I finally received another message from support. It was simply the same explanation about the $1 upgrade fee, without addressing the actual pricing discrepancies or confirming any escalation. Most concerningly, despite repeatedly notifying Lumen of this issue, the advertising remains unchanged. As recently as 16 October 2026, the website still explicitly confirmed “Price: $1” alongside the contradictory $240 charge. I understand that mistakes happen. What I find unacceptable is the repeated failure to acknowledge or investigate the discrepancy after being provided with clear evidence. I’ve asked Lumen to honour the advertised $1 price for the first 12 months or provide a substantive explanation. Neither has happened. In my opinion, this pricing presentation is misleading, and Lumen’s handling of my complaint has seriously undermined my trust in the company. I have screenshots and correspondence documenting everything. I’d encourage prospective customers to check the actual amount payable rather than relying on Lumen’s advertised membership prices. I’ll update this review if Lumen provides a meaningful response and resolution.
Sally
Australia
It’s great to see how my body respond…
It’s great to see how my body respond to food exercise and sleep. The app helps understand in a way that simplifies the science so that you can make adjustments. Tracks macros well, once I figured out how to get it set up!
Daryl
United States
What made my experience great was I had…
What made my experience great was I got to have the two best employees to help me with a problem I had with my lumen. I had the best two employees of lumen who helped me from the beginning of this problem. The two employees who were beyond great were Lily and Alice. These two employees were the best. They both walked me thru the problem until it was finally resolved . I could not have a better experience than with these two employees. They are the best.
Ve
United States
Dealing with customer support chatbots…
Dealing with customer support chatbots is usually a headache, but this was the complete opposite. I reached out about my annual Lumen membership, and within just a few quick prompts, the chatbot seamlessly applied a 50% discount to my renewal. No endless circular loops, no friction, and no waiting on hold for a live agent—just an instant, straightforward resolution that saved me serious money. Exceptional, efficient experience!
David M
GH
Horrible Business Practices
When I ordered the lumen I made sure that I did not subscribe to any memberships or subscriptions because I had seen numerous complaints about them charging people ongoing fees. Well here we are now,, fighting with the company to give me my $179 refund for a subscription I never agreed to! The tool never worked for me so it hardly was used on top of all that. Very frustrating!!!!! Update: They have responded and told me they will refund my money. We shall see. This was after several emails back and forth. If they refund my money I will again edit my review or remove it.
Kimberly Bailey
United States
Knowing the exact time of my fat burn…
Knowing the exact time of my fat burn fast to stop. Carbs, protein, fats all in one spot not everywhere 😋 💪
Shannon
United States
Very interesting and motivating…
Very interesting and motivating information.
Donna
United States
The Data really helps plan my day.
The Data really helps plan my day.
Rebecca E.
United States
Awesome Product
Very easy to use app. Helps me make informed decisions while fasting.
Matthew S
United States
It's hugely helpful in keeping me…
It's hugely helpful in keeping me accountable!
Keith
United States
Really great
Really great! But the meal plan etc does not make sense because the app does not know your biometrics so when it suggests x amount of carbs for example, it does not make sense as it is way too much for someone with my height and weight
CC
Netherlands
It's great I think so far
It's great I think so far
Carissa
United States
I really like the info the app gives me…
I really like the info the app gives me o am learning how to implement it into ly daily life
Carly Kerby
United States
Do NOT get in their affiliate program
The product itself is fine, but unfortunately, the customer service has been extremely disappointing. As an affiliate who has promoted their products, I am still owed commission payments that they have failed to pay. I’ve contacted them multiple times to resolve the issue, but despite my efforts, I have received no satisfactory response or payment. Very frustrating and not the level of customer service I would expect from a company I’ve supported and promoted.
Mariana G Silva
Brazil
To early to tell
Only been using it one week, so to early to tell. The app has helped me keep my macros and total calories in check though.
Steve
United States
Great start!
So far easy to use and has good meal tracking features.
Justin
United States
I love it it helps me see myself more
I love it it helps me see myself more
Khaled
SA
Huge disappointment and delayed product shipment
Terrible customer service. Last year in September, I paid in advance nearly $400 for the next generation device (Lumen Pro) which is many months overdue being shipped, and now they are saying, “end of year.” There have been multiple delays. Meantime, my current device is no longer functioning. They ask me to buy a replacement at a discount while I wait for a device I’ve already paid for and is delayed by their own fault. Nuts! I’ve asked for a refund (and update: I did receive it promptly). Incredibly poor way to treat a long standing (and patient; now former) customer. I’ve re-rated them up to “Meh-minus.” Never should have happened this way. But at least they solved it.
Jill P
United States
It makes me more aware of my food…
It makes me more aware of my food intake and kitchen work.
Roberto Montesinos
United States
Cool device to help you stay focused on…
Cool device to help you stay focused on fasting and diet
Drake Vincent
United States
very ilLUMENating!
Using this app has been very ilLUMENating! Helping me track and understand macros to better regulate my health - great daily assistant, easy to use, and encouraging.
John S-C
United States
Nice product that worked easily from…
Nice product that worked easily from the get go. Clear instructions and love the graphics that help me understand my own metabolism.
Julie Hall
United Kingdom
Informative
Product, application
Don
United States
Good info
Good info. I wish logging meals was easier.
Brad
United States
Great info to evaluate what is…
Great info to evaluate what is affecting my fat burn…what I ate, workouts, overnight fast. Super helpful
Lindy
United States
Love it!
I like the information it provides me. I’ve lost 5 pounds so far!
Jana Lyn Porter
United States
Love it
Have only had lumen for a few days now, but i do love it. It really helps teach me, make me aware of what my body is doing. I have always been a fan of scientific instruments, lol But right now i'm currently fasting and changing my diet, so it's interesting and helpful to use.
Lynn
United States
Just started but is very insightful
Just started but is very insightful
Cathy
United States
I’m still getting used to it
Linda
Thailand
Bad start…great recovery
My experience with Lumen has been just okay. My order wasn’t processed in a timely manner and was only resolved, albeit promptly, after I notified customer service. I will say that customer service handled my issue promptly and professionally. That said, I actually like Lumen device a lot. Its app software is intuitive and informative. I’m looking forward to better understanding how to change my overall health from it.
Chris
United States
Helpful customer support
Had an issue with my subscription billing and they were quite understanding and offered a great solution. Super helpful!
JCR
Switzerland
Lumen is changing my weight loss and healthy lifestyle journeys one breath at a time!
I highly appreciate my Lumen for the tool it is, as it helps me visualize when I should not consume carbs. The app has educated me on the terms that matter to my weight loss, i.e, mitochondria and glycogen. The education on the Lumen app alone has laid a better foundation for a healthier lifestyle beginning at my plate to effectuate change before going to the gym.Lumen is changing my weight loss and healthy lifestyle journeys one breath at a time!
TeeJaye
United States
Excellent product
Excellent product! The help provided by my Lumen has truly exceeded my expectations. Would definitely recommend this company and product.
Sherri
United States
Quantum leaps in weight loss and overall health
I am learning what helps or hinders my metabolism in going from a carb burning engine to a fat burning engine. I have cut carbs down significantly, combined intermittent fasting to achieve significant weight loss and improved health.
John George
United States
love how the Lumen helps me station…
love how the Lumen helps me station track while trying to lose weight.
Cindy
United States
The app has gotten substantially better…
The app has gotten substantially better since I first purchased and started using the device. I misplaced it for a while and didn’t really miss it since I wasn’t learning much of value. But I found it again & thought “why not?” I really like the changes / updates to the app and tips it provides. It still doesn’t seem to help make clear connections to food consumed. So I may stop using that portion since it’s time consuming without providing much value beyond personal tracking. But perhaps it will be improved in the future
Erica Watson-Currie
United States
Expensive trap
The device itself seems to work okay if your patient and follow the eating. Its simply an expensive tool to collect data. That being said, it is so difficult yo cancel i actually ended up not getting it canceled 2 yrs in a row ($300 each yr). The app cancel membership didnt work. This yeah it still didnt work but I was super persistent with them and FINALLY got it canceled. They block what you can post in the FB group (nothing negative). So, decide is fine, company is absolutely shady and will trap you into a very expensive membership that will be near impossible to cancel.
Megan S.
United States
Takes a while to get the breath right
Takes a while to get the breath right
Angel
Canada
It worked for me at first…
When I first started using Lumen I lost 20 pounds following its nutrition plan and my metabolism improved tremendously. Then something changed. I remember there was an app update and it changed my nutrition plan to something unmanageable. I think AI was used to make adjustments and it stopped working for me. I stopped enjoying using it. My metabolism score also dropped. Whatever they had in the beginning was perfect. Anyway, I gave it 3 stars because it initially did help me. I sort of stopped trusting the nutritional guidance. I started using Noom and it’s much more realistic and dynamic (real time macro changes).
Tamara Kellam
United States
The app is great and the customer…
The app is great and the customer service is excellent.
Jordana
United States
Easy to use
Easy to use. Great knowledge points. Helps w mindful eating
Edna Baldwin
United States
excellent customer service excellent…
To whom it may concern I am extremely pleased with Lumen. My husband and I am pleased with the service that has been provided for us. My daughter signed up and bought a Lumen and I was having trouble getting her my code and immediately one of the reps took care of it and applied my two free months and my daughter got her $40 credit to her account immediately you guys are awesome love Lumen and I will forward to other friends of mine to get it. thank you very much too. The rep who helped me his name is MOHN not sure how to spell it, but he was amazing and very, very helpful. Thank you again and I can’t wait to pass on this tool to my other friends.
Ve
United States
Accountability
Accountability increases and makes you take the better choices
GFCxtreme Fitness
United States
Very insightful and helpful guidance…
Very insightful and helpful guidance and informative.
Brittany
United States
It is user friendly and helpful
It is user friendly and helpful. I no longer use the calorie tracking because it wasn’t reading my meals properly or recognizing my foods. Many barcodes were not found. I wish you could scan a recipe and it would be able to log the food in portions as well. For example I make my own chia seed pudding every morning and protein balls and I can’t scan the recipes for those.
Sarah Wisdom
United States
Loving the science!
I’ve just completed my 8th day on Lumen and already I’m beginning to feel healthier. I love the science behind Lumen and as retired engineer I relish the challenge of working within the daily nutrition limits to plan my meals an exercise routine. I feel like I’m finally in control of my weight loss. Each day I look forward to breathing into my Lumen to see the results of my hard work and learn what more I can do to improve my metabolism. The meal suggestions are very useful, however I wish they included cooking instructions and not just the list of ingredients.
Anne
United States