Your body’s fuel-burning system has been a black box until now. The Lumen Metabolism Tracker cracks it open with a simple breath test, revealing whether you’re burning carbs or fat at any given moment. What once required expensive lab visits and bulky metabolic carts now fits in your pocket, delivering real-time insights that actually change how you eat and exercise.
Scientific Precision Meets Consumer Simplicity
CO₂ breath analysis delivers lab-accurate metabolic readings in seconds.
Lumen’s CO₂ sensor and flow meter technology mirrors the same principles used in professional metabolic testing. One measured breath tells you if your body is in fat-burning mode or running on carbohydrates. Multiple peer-reviewed studies support the accuracy, while the device itself lasts a full week on single charge with unlimited measurements for life. Rather than making educated guesses like typical fitness trackers, it provides direct metabolic measurement made accessible.
AI Coaching That Actually Adapts
Personalized nutrition guidance integrates with 30+ fitness platforms.
The companion app transforms raw breath data into actionable daily plans. Planning a heavy workout? The AI might recommend carb-loading. Trying to lose weight? Expect low-carb day suggestions when you’re showing fat-burning potential. Integration spans Apple Health, Garmin, Oura, and Peloton, though Samsung Health users remain oddly left out. The subscription-based coaching feels like having a metabolic expert on speed dial—because you literally do with the premium plan.
Real Users, Real Results
High satisfaction ratings reflect genuine behavior changes in daily routines.
Picture tracking your ketosis progress without guesswork, or timing your pre-workout meal perfectly for peak performance. Users consistently praise Lumen’s ability to make abstract metabolic concepts tangible and immediately actionable. The 4.6-star Trustpilot rating from 4,400+ reviews reflects genuine enthusiasm, though some note app bugs and the mandatory subscription requirement. This requires regular engagement to deliver value—not passive monitoring.
Premium Price for Premium Insights
Two pricing tiers require ongoing subscription commitment beyond initial device cost.
- Lumen’s “Metabolic Transformation” plan costs $299 upfront plus $14.91 monthly
- “Metabolism Booster” starts at $199 with $19 monthly fees
The device becomes yours permanently, but the subscription powers everything meaningful. For committed biohackers and serious fitness enthusiasts, that ongoing cost unlocks genuinely unique metabolic intelligence. Casual wellness shoppers might find traditional food tracking serves them just fine—and costs nothing monthly.
