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Service Status: All systems operational and responding normally
Performance Trend (24h): Service stability is degrading
Community Reports: No issues reported by users in the last 24 hours
Global Availability: Working normally worldwide
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Lumen - Metabolic Coach

Health & Fitness
4.5
3.3K+ reviews
Downloads: 100.0K+
Type: Free
Content Rating: Everyone

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 nutrit...

App Screenshots

User Reviews from Store

Showing 8 of 14 reviews (Page 1 of 2)

Ang McFadden

Ang McFadden

Oct 27, 2025
It's never clear which breath you're taking when you open the app from the notification, and there is no way to fix it when you're done. I try to be aware of the timepoint, but I expect the app to keep better track. I've been tracking for a couple of months now, and it hasn't been helpful for me. Glad others seem to like it.
Shelia P

Shelia P

Oct 22, 2025
Very pleased so far! Customer service is fast and efficient
Gayle McKew

Gayle McKew

Oct 22, 2025
I paid for the device and am close to the end of my second year. It really hasn't done much to support my wellbeing. Add to that they are now actively promoting a "newer better" version. I actually see no value in the product. My next job will be trying to figure out how to cancel future payments.
Tammi B

Tammi B

Oct 17, 2025
I paid for the device and 2 annual memberships but that's not enough for this greedy company. Very poor taste to force people to link a card so you can auto renew their membership a year later when they probably stopped using the app. If the app was good and worth the money, you wouldn't have to trick people into paying.
Sarah

Sarah

Oct 6, 2025
Device works well but after purchasing the device some users still have to pay the subscription for it to work even though you purchased the device up front. Other users only have to pay for the additional features and can use the device without the subscription depending on the version you have.
Andrea Meredith

Andrea Meredith

Oct 2, 2025
Application is very easy to use and the customer service interaction has been great.
mala riley

mala riley

Oct 2, 2025
poor. it wants me to enter my last mean but the only option its giving me to choose from is yesterday n today. well I've been fasting over 36 hrs , lumen says it can't give me a good insight till I put in my last meal. So its poorly designed.
Hector Torres

Hector Torres

Oct 1, 2025
Best health tool/hardware I've ever owned. As in EVERRRRR.

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