Lumen - Metabolic Coach

Lumen - Metabolic Coach

Hack your metabolism

6.5K ratings
707 reviews
Free

Details

Released
August 20, 2019
Updated
November 7, 2026
Lumen - Metabolic Coach screenshot #1 for iPhone
Lumen - Metabolic Coach screenshot #2 for iPhone
Lumen - Metabolic Coach screenshot #3 for iPhone
Lumen - Metabolic Coach screenshot #4 for iPhone
Lumen - Metabolic Coach screenshot #5 for iPhone
Lumen - Metabolic Coach screenshot #6 for iPhone
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About

Gain control of your metabolism with personalized insights and daily nutrition plans. Understand your body's fuel usage in real-time to optimize your health, weight loss, and overall well-being.

✓Real-time metabolic insights
✓Personalized daily nutrition plans
✓Lifestyle recommendations
✓Healthy habit building
✓Progress tracker
✓Monthly cycle tracker
✓Community support
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What users say about Lumen

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+1

What's New in Lumen

3.34.1 (3625)

November 7, 2026

Thanks for using Lumen! This update includes new features to keep you on track with your Lumen goals.

User reviews

Look elsewhere

A couple years ago I bought a lumen. It did not work out out of the box, no matter how I breathed into it the circle on the app would not move at all. I had to call customer support to get me to send them a new one. It worked great since then. However, it is an absolute nightmare to do any changes to your account or membership. It forces you to use the app to change your membership. Once you get the app, it forces you to sign in and go through the setup of your lumen even if you already have an existing account. Then once you’re in the app, if you go to change your membership settings, it asks for an activation code in order to see your membership. There’s no simple way to pause or cancel the subscription. I am absolutely done with this service it has been a nightmare and I don’t want to be charged $19 a month because it is absolutely not worth the hassle.
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Disappointing

I used it last year, and paused my subscription for about a year, when I decided to give it another go, I discovered how expensive it is and the app is only giving me the option of a two person subscription, no thanks, I live alone and don’t have multiple personalities!

Hunk of junk

Now it’s asking for a code that it won’t accept. It wants a subscription or it refuses to work. I didn’t lose any weight anyways. I’ll stop using it. Checking my measurements was a chore I should have given up on a year ago. Waste of $400 bucks.

Be aware

I bought the product as a gift and liked the product initially but over a couple of months stopped using it.
Then, I was charged $240 auto renewal fee. Be aware.

Turns out that a very scamy notice was sent to me - “exciting 12 month ahead with lumen”. Not renewal is coming.
I am disputing the charge and feel very differently about the brand.
Also, suddenly the support center isn’t answering.
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Works every tenth time

I can’t get it to work after trying to breathe in and out for 5-10 times. It gives an error or tells you to keep breathing or breathing out so much that your lung volume can’t handle it.

Developer apps

User experience

🐞

Reported Bugs

3 issues

App crashes and freezes

Bug

Difficulty calibrating the device

Bug

Inaccurate breath measurement detection

Bug
✨

Requested Features

4 requests

Ability to edit logged foods and measurements

Feature

Integration with fitness and food tracking apps

Feature

More flexible and personalized carb recommendations

Feature

Improved meal planning and recipe suggestions

Feature

FAQ

What is Lumen's primary function?

Lumen measures whether your body is burning fats or carbs through a single breath, providing real-time metabolic insights to guide your nutrition and lifestyle choices.

How accurate are Lumen's readings?

Lumen's technology has been scientifically proven to accurately measure metabolic fuel usage in validation studies when compared to the gold standard (RER).

Does Lumen integrate with other health apps?

Yes, Lumen integrates with Health apps to sync data on your activity and sleep, providing a more comprehensive view of your health.

What kind of personalized plans does Lumen offer?

Lumen offers personalized daily nutrition plans and lifestyle recommendations for sleep, exercise, and fasting, tailored to your unique health goals.

Can Lumen help with weight loss?

Yes, Lumen supports weight loss journeys by providing insights into your metabolism, macro-tracking your meals, and offering personalized nutritional plans.

What age rating does Lumen have?

Lumen is rated 12+ by app stores, making it suitable for users aged 12 and above.

How often is Lumen updated?

The latest version of Lumen is 3.34.1, released on November 7, 2026, indicating regular updates to improve functionality and features.

What devices does Lumen support?

Lumen is supported on iPhone and iPod devices, allowing users to access its features on their Apple mobile devices.