Metabolism Tracker

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Get 10% off when ordering two devices.
Try Lumen risk free for 30 days
We know you will love your Lumen but If for any reason you are not 100% satisfied, return your Lumen for a full refund no questions asked.
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Try Lumen risk free for 30 days
We know you will love your Lumen but If for any reason you are not 100% satisfied, return your Lumen for a full refund no questions asked.
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Scientifically Validated
Lumen has been validated and meets the gold standard of measuring metabolism

What you get

the lumen metabolism tracker
Lumen device
$349 value
charging dock for the lumen metabolism tracker
Charging dock
usb-c cable for lumen charging dock
USB-C cable
travel case for the lumen metabolism tracker
Travel case
screenshot from the lumen app, ios phone
Lumen app
  • Custom wellness plans
  • Daily metabolism insights
  • Daily personalized meal plans
  • Workout nutrition guidance
iOS / Android
icon of headphones
Premium support

Technical specifications


iOS compatibility (iOS 8 and higher)
iPhone 6 and more recent

Android compatibility (8.0 and higher)
Recommended higher than 720 x 1280 pixels

Bluetooth connectivity
Bluetooth Low Energy needed

Application connectivity
Apple Health Kit
Google Fit

*Cannot be set up from a computer


Conditions of use
Not water resistant or water proof
Operating temperature: 15°C to 40°C (59°F to 104°)
Storage temperature: -30°C to 70°C (-22°F to 158°)

CO2 sensor

Single battery charge lasts
Up to 14 days in normal use
Lithium polymer battery

Dimensions and weight
Lumen device: 102mm x 41.4mm x 33.3mm, 75g
Docking station: 14.5mm x 79.5mm x 68mm, 145g
Connections: USB-c


When will I receive my Lumen device?

If you order Lumen today, your Lumen Device and accessories ships in 7-10 business days.

Who is Lumen for?

Lumen was designed to be used by healthy individuals who are over the age of 16. Use of the Lumen by persons below the age of 16 or by individuals suffering from metabolic/respiratory medical conditions or from conditions which may be affected or aggravated as a result of dietary changes, such as diabetes, clinical obesity, severe asthma, COPD, may result in inaccurate output and readings of the Lumen or otherwise in dietary suggestion by Lumen which may cause damage when implemented by persons suffering from such conditions. It is therefore recommended that such individuals either do not use Lumen or consult their doctor before purchasing.

Is Lumen considered a medical device?

Lumen is not a medical device. Lumen is a wellness product intended to provide metabolic reading and tracking. It does not diagnose, treat, cure or prevent any disease, or otherwise assist in such activity, nor does it provide any professional health related advice or any medical diagnoses. In light of this, any information, plan or suggestion provided or concluded from the use of Lumen, is not intended and should not be deemed medical or other health-related professional advice, diagnosis or treatment, nor is it intended as a substitute for medical or professional advice, diagnosis or treatment.

Can multiple people share one device?

Lumen is designed to be used by one individual at a time. While it is possible for two people who live in the same home to share a single device, we do not recommend it for a number of reasons:

1. Each user will need to download the Lumen App separately to their phones and create their own profiles.
2. In order to unlock your day and receive your meal plan, you'll need to complete a morning breath measurement.
3. Sharing a device makes it difficult to use Lumen consistently on a daily basis, leading to lower rates of success in reaching health goals. Our testing shows that users who use Lumen throughout the day are statistically more likely to succeed in their goals.

Has Lumen’s technology been validated?

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.

What is the return policy?

If you are not completely satisfied with your Lumen Device, you are entitled to return your Lumen Device and receive a refund within 30-days from the time that the device was delivered. You can read the full details of the return policy in the link in the footer.

What is the warranty?

There is a one-year warranty on the hardware of the device and charging dock. You can read the full details of the warranty policy in the link in the footer.