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Lumen AI

AI metabolism tracking device and app that measures metabolic rate to optimize nutrition and fat burning. Pricing: Paid ($349 device + $19/month subscription for AI insights). See pros, cons, alternat

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What is Lumen AI?

Lumen is a handheld device paired with a mobile app that measures your metabolic rate by analysing your breath. The device uses indirect calorimetry to determine whether your body is burning carbohydrates or fats, then provides personalised nutrition and exercise recommendations based on your metabolic state. It's designed for people interested in weight management, athletic performance, or understanding their individual metabolism. Rather than relying on generic dietary advice, Lumen gives you specific guidance on what to eat and when to exercise based on real metabolic data collected daily.

Key features

Breath analysis

Handheld device measures CO2 and O2 levels to calculate metabolic rate and fuel utilisation

Daily metabolic readings

Track whether you're in a carbohydrate-burning or fat-burning state each morning

Personalised nutrition guidance

App recommends macronutrient ratios and meal timing based on your metabolism

Exercise recommendations

Suggests workout timing and type to optimise your metabolic goals

Progress tracking

Monitor changes in metabolic flexibility and response to diet and exercise over time

AI-driven insights

Machine learning adjusts recommendations as it learns your patterns

Pros & cons

Advantages

  • Provides objective metabolic data instead of relying on estimates or generic calorie counts
  • Helps identify metabolic flexibility, which is useful for athletic training and fat adaptation
  • Actionable daily guidance means less guesswork about nutrition and exercise timing
  • Portable and easy to use; takes roughly a minute per measurement

Limitations

  • Significant upfront cost with ongoing subscription means it's not accessible for everyone
  • Requires consistent daily use to build useful baseline data; sporadic measurements are less valuable
  • Results depend on proper technique and consistent measurement conditions, which can affect accuracy

Use cases

Endurance athletes optimising carbohydrate loading and fat adaptation strategies

People managing weight loss who want to time meals and exercise based on actual metabolic state

Individuals with metabolic concerns wanting to track changes in response to lifestyle modifications

Anyone curious about whether their body is metabolically flexible or overly reliant on glucose

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Pricing

Device + Subscription

$349 (device) + $19/month

Lumen device, mobile app with daily metabolic readings, personalised nutrition and exercise recommendations, progress tracking and AI insights

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Get Lumen AI
  • Always free
  • No credit card