Lumen - Metabolic Coach

4.3
3.38K reviews
Content rating
Everyone
100K+
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About this app

Do you want to take control of your metabolism, lose weight, and live a healthier lifestyle?
With Lumen’s personalized metabolic coach, you can!

Lumen is the world’s first device to measure whether your body is burning fats or carbs - in a single breath. Say goodbye to guessing and hello to real-time metabolic insights, tailored daily nutrition plans, and recommendations on what to eat and when.

With direct access to your metabolism at your fingertips, our features will guide you to speeding up your metabolism, keep you motivated to reach your health goals, and feel your best self.

EVERYTHING YOU NEED TO HACK YOUR METABOLISM

Features include:
* Real-time metabolic insights to guide you on your journey
* Personalized daily nutrition plans
* Lifestyle recommendations for sleep, exercise, fasting, and more
* Customizable tracks to achieve your goals
* Healthy habit building
* Progress tracker
* Monthly cycle tracker
* An engaged community for support and discussions


This app integrates with Health apps to sync data on your activity and sleep.


SUITABLE PLANS FOR EVERYBODY


At Lumen, we believe in a personalized approach to health. That's why we offer different plans designed to fit your unique goals, whether it's weight loss, fitness performance, or improving your metabolic health. With our progress tracker and healthy habit influences, you'll have the support you need to succeed.




WORKING ON YOUR WEIGHT LOSS JOURNEY


By macro-tracking your meals, you can continue enjoying the meals you love with a new outlook and healthier relationship with food and yourself!


PERSONALIZED NUTRITIONAL PLANS & MEAL PLANNING


Lumen tracks your metabolism, but it’s also a powerful tool for managing your journey in nutrition, fitness, and overall well-being. The app includes interactive features to help you stay on track with your nutrition goals, such as meal planning and recipe suggestions.



FUELING UP PRE AND POST WORKOUTS

Don't let energy levels hold you back from your workout goals. Lumen gives you real-time insights into your body's fuel usage, so you'll know exactly when to hit the gym and when to rest. Lumen levels will guide you on whether you have enough energy or need to fuel up before your workouts.

SCIENTIFICALLY-BACKED


If you like talking science - we’ve been featured in peer-reviewed articles and building research ourselves. Lumen's technology has been scientifically proven to accurately measure metabolic fuel usage when compared to the gold standard (RER) for measuring metabolism in multiple validation studies.


PREMIUM CONTENT


Improve your knowledge with our informative library of videos from fitness experts, coaches, and nutritionists.


MOTIVATION


Every breath measurement will tell you what’s happening in your body. These insights help you maintain your motivation and give you guidance on how to hit your goals.

So, what are you waiting for? Download Lumen today and start your journey to a healthier, happier you! You'll have the support and guidance you need to take control of your metabolism and live your best life.


Lumen has been featured in Forbes, BBC News, TechCrunch,Entrepreneur.com, Wired Magazine, Shape Magazine, and more

Winner of the CES 2019 Best Reviews Award | Listed in the Top 30 Best Devices CES 2019 | Esquire 2020 product award

Please note:
You must have a Lumen device to use this app. You can order your device from www.lumen.me
While Lumen is not intended as a medical device, it is recommended to consult your doctor before starting any nutrition plan.

Interested in partnering with us? Get in touch with us www.lumen.me/partners

Join us and begin your Lumen journey today!
Updated on
8 June 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance
This app may collect these data types
Personal info, Health and fitness and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
3.3K reviews
Briana Benson
1 January 2026
This is a decent app that helps with keeping track of my metabolism, it actually has me watching what I eat And when I work out. But, it has one really big sticking point. Occasionally I forget to log my meals and will do all at the end of the day, and it will put them in the wrong day (usually the day after I want). You can't edit a meal and change the day, you have to delete it and put it in all over again. This is highly annoying and actually detracts from wanting to track.
1 person found this review helpful
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Lumen.me
2 January 2026
Thanks for the thoughtful feedback! We’re glad the app is helping you stay mindful of your eating and workouts. We're sorry to hear about the frustration with meals logging to the wrong day. You should be able to select specific days and add meals there at any time. Please reach out to our support team if you still have issues with this.
Andrew Soundy
19 December 2025
The app integrates with the device well but that's where it's functionality ends. The interface is clunky, it's not ready and in some cases not possible to correct erroneously entered data and worst of all, the "sync" feature with cronometer and withings is completely broken. I hope there are are massive improvements to this app moving forward.
3 people found this review helpful
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Lumen.me
17 December 2025
Hi Andrew, thanks for the review, we're sorry to hear about this experience. If you could please reach out to us via in-app chat or via email: support@lumen.me, we would love to help with your specific concerns with integrations. Thank you for your time!
Jose Arroyo
20 October 2024
Barely adequate. The meal tracking leaves a lot to be desired. It doesn't recognize some barcodes except for what's already in their system. If you make a mistake saving meal portions it has to be deleated and re-entered. The My Foods can't be edited/ deleted and the same foods keep being added to it. This app is very tedious, the only thing that works is the breath analyzer. I'm going to start using Lose-it for my meals. Why aren't there any smart scales that can connect to this?
9 people found this review helpful
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What's new

Thanks for using Lumen! This update includes new features to keep you on track with your Lumen goals.
Content rating
Everyone
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App support

About the developer
META FLOW LTD
support@lumen.me
30 Haarbaa TEL AVIV-JAFFA, 6473926 Israel
+972 55-502-5508