Brand Overview: Lumen
Lumen is a wellness technology brand known for creating a portable, handheld metabolic tracking device that measures whether the body is burning fats or carbohydrates. The brand is owned and operated by Metaflow Ltd., founded in 2014 by twin sisters Dr. Michal Mor and Dr. Merav Mor, alongside Daniel Tal, Dror Ceder, and Avi Smila.
Contact Info
Customer Support Email: [email protected]
Phone Number: No official customer support phone number is publicly available; customer assistance is handled primarily through email and the companion app's live chat.
Industry and Operations
Lumen operates in the digital health, wellness technology, and personal nutrition industry. The company combines hardware sales with an ongoing software-as-a-service (SaaS) subscription model to provide users with personalized metabolic data and diet coaching.
- Handheld Metabolic Tracker: A pocket-sized breath analyzer that measures carbon dioxide (CO2) concentrations in exhaled breath to evaluate real-time fuel usage (fat vs. carbohydrate burn).
- Lumen Mobile App: A mobile application for iOS and Android that translates breath readings into daily macronutrient recommendations, metabolic flexibility scores, and meal suggestions.
- Membership Plans: Required recurring subscriptions (monthly or annual) that unlock device functionality, continuous tracking, and guided health programs.
User Sentiment
Overall user sentiment regarding Lumen is mixed, with a substantial volume of consumer complaints centered on subscription billing practices, usability demands, and hardware reliability.
- Subscription and Auto-Renewal Disputes: Many users express frustration over automatic subscription renewals, recurring charges billed after cancellation attempts, and the inability to use the device without an active paid plan.
- Cumbersome Testing Protocol: Customers frequently complain that taking multiple guided breath tests each day is disruptive, repetitive, and difficult to maintain over the long term.
- Reading Consistency and Accuracy Concerns: Several reviewers report fluctuating or questionable metabolic readings and find the resulting dietary guidance too generic or repetitive.
- Bluetooth and Connectivity Glitches: A notable portion of user feedback mentions problems pairing the handheld device with smartphones, failed breath uploads, or sudden sync drops.
- Support Accessibility and Refund Difficulties: Consumers report slow response times through email-only channels, the absence of phone support, and strict return terms when seeking refunds within the trial window.
Share Your Experience
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