Lumen - Metabolic Coach

• Free

Last verified 31 Jul 2026

4.6 6531 ratings · App Store

1. 5/5I’ve Tried Several Programs, But This One Is Different

   At first when i heard about Lumen i rolled my eyes. It sounded like another too good to be true gimmick. Promising everything and delivering nothing. After being betrayed by Weight Watcher and Itrackbites. I had little hope that this would be any different. Still i decided to take a leap of faith and i was flabbergasted. I had never considered using my metabolism to lose weight, it was always smaller portions. Low fat foods. Cutting out this and that. But when I began to use Lumen it gave me real insight into what i was eating and when. Not to say it wasn’t definitely a learning curve. I had a lot of trouble in the beginning breathing in the device. It actually took about a week or more to finally get it down. So it does take some work. The only downside is unfortunately the price. However the good news is that you can get the device elsewhere, just make sure they have the activation key before you purchase it. You can track your food without the guilt or having someone shake their finger at you. It gives you your personal plan that allows you to still eat the foods you love and adjust the times you eat them. Never have i been so excited about a Health Journey with Lumen. I fully intend on making this a permanent change and lifestyle. If you have any questions please ask! The staff online are patient, kind and helpful people who truly are there to ensure you have all the tools you need to take a chance and make a change!

   sorikugurl · 31 Jul 2026

2. 5/5Loving my Lumen, but $$$

   I had pretty much stalled with weight loss for months before I saw an instagram ad for this. I thought it was pretty pricey for only a year of the service, but as a low-carb eater I wanted an easier way to know if I was burning fats or carbs throughout the day. Lumen’s macro recommendations meant I needed to up my calories by 400 each day, which I thought was crazy but worth a try. I just finished my 2nd full week with Lumen and I went from the first week figuring out my new diet and blowing 4s and 5s (almost exclusively burning carbs after fasting) to my second week blowing mostly 3s (a mix of both fats and carbs), and today I blew my first 2 (mostly fats)! Since I’m aiming for weight loss, none of this really mattered if I didn’t see progress on the scale or in other measurements, but in 2 weeks I’ve lost 3 pounds. By eating a lot more of the right balance of macros. Keep in mind I had spent months eating less food and losing nothing, even gaining half of the time. I’ll keep using my Lumen until my subscription is up. I don’t think it’s necessarily worth a 2nd year because it’s so expensive and only provides one real measurement. After a year I’ll be used to the recommended routine and know how my body is burning carbs/fats after certain meals and workouts so I don’t see the point in spending that much money a 2nd time. If it was cheaper, I might keep it but the costs outweigh the benefits right now.

   UserExperienced · 31 Jul 2026

3. 5/5An education in my metabolism

   I have only been using lumen for a little over a week now, so I’ll try and come back with a more detailed review with more use. So far, the information has been really helpful. I now have more than an educated guess about how my habits were impacting my metabolism. I am in my early 40s, and still a healthy weight, though I have not been able to lose those last pounds after my last baby who I had at 40. I had begun intermittent fasting in hopes of not only losing those last pounds, but also because I wanted to see if it would boost my energy levels. But I didn’t know my best fasting window. So far, I’ve been using lumen to time my fast, as well as figure out what to eat during my window and in preparation and response to the various forms of exercise I do daily. I feel like I finally have a glimpse into what is happening in my body, and though I’m still learning how it all all’s and how I specifically need to respond to the information I am getting, I have lost a few pounds and I am feeling more energized. I had already begun losing weight just from my IF, so in total I’m down 5 pounds - only a pound or so since starting lumen, but I can feel my body thinning out and letting go of the extra fat. Here is to hoping I can keep gaining greater understanding of how my metabolism works, so I can avoid the wild weight gain my siblings have gone through in their 40’s

   Papu's · 31 Jul 2026

4. 4/5I like it. I want to love it but…

   The first week using lumen went really well. I like being able to follow macros. And my workouts have improved in that I’m getting better quality sleep, faster recovery rates and more energy. My complaint is that this week the app has been super buggy. When I go to do a breath, the dot will go blank, turn red and say I didn’t breathe hard enough in or out. The circle goes red etc. Sometimes the entire page will just be blank white. It’s frustrating because an activity that should take about 40 seconds ends up taking 5 minutes or more. Not ideal when I’m doing several check ins a day. I end up having to force close the app to try and reset it. It’s downgrading the user experience rapidly. **UPDATE**Given the developer’s response I wanted to make my review more clear. The app isn’t giving an error because of me breathing into the device incorrectly. There is something going awry with the app itself. Which is why I end up having to reset the app entirely. During the 10 second countdown, usually around second 4 is when the circle goes red and says the entire process has to be done again. Sometimes after doing the intake breath the countdown never starts. The entire inner circle just goes white and stays that way. Or I will get a video that just say it’s the app having an error. I don’t mind waiting for you guys to work out the kinks. But I wanted to be clear, so you realize what’s happening instead of someone giving feedback for me to use the resources for better breathing.

   Sabado D · 31 Jul 2026

5. 5/5Wow! Great results without medication.

   In 2009 before before the birth of my daughter, I was in a weight loss program through Kaiser Permanente and I lost over 100 pounds. At that time at that time they used a device similar to Lumen while products like this one were still being developed and unavailable to the general public and I had a lot of success! When I saw this product come out available for anyone to purchase I jumped at the chance because I knew it would work. I realized I would like to finally lose the weight that I gained while I was pregnant. I’m the type of person who doesn’t particularly like to take medication unless I need to, but for quality of llofe, less aches and pains, stronger body, better sleep I knew I needed to lose weight again, so I decided to try this on an offhand chance it was similar to what I used in 2009. At first I wasn’t sure what to think because in the first couple of days I was getting three for almost all of my scores so I quickly checked into the Lumen community, which is available to those who purchased the Lumen product and app and when I checked into the community, there were a number of people saying “I only get three what’s going on” and I was able to quickly improve my flex score and get to where I’m bringing fat more often getting better sleep feeling stronger energy, simply by following things talked about in the community, which is another nice side benefit of Lumen that is not prominently displayed in their advertisements. I highly recommend it. You only have to give it a try to realize how amazing it is. Great job Lumen team thank you.

   SilverStreaker · 31 Jul 2026

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