Health Optimization
Tools & Apps
Curated tracking tools, food scanners, wearables, and apps referenced by leading health optimization experts. Each tool is selected for data quality, practical utility, and alignment with evidence-based health principles.
Metabolic Tracking
Lumen
Real-time metabolic flexibility tracker
Handheld device that measures CO2 concentration in your breath to determine whether you are burning fat or carbohydrates. Provides a daily metabolic score and personalized nutrition guidance based on your current metabolic state.
Best For
- Metabolic flexibility assessment
- Optimizing fat-burning windows
- Nutrition timing
- Fasting validation
Cronometer
Precision nutrient tracking beyond calories
The most detailed nutrition tracking app available to consumers. Goes far beyond calories and macros — tracks vitamins, minerals, amino acids, and fatty acids. Invaluable for identifying micronutrient gaps and optimizing dietary quality.
Best For
- Micronutrient gap analysis
- Protein optimization
- Ketogenic diet tracking
- Identifying deficiencies
Carb Manager
Low-carb and ketogenic diet tracker
Nutrition tracking app optimized for low-carbohydrate and ketogenic diets. Tracks net carbs, macros, and ketone levels with a large food database. Includes meal planning, fasting timer, and keto-specific educational content.
Best For
- Ketogenic diet tracking
- Net carb counting
- Macro optimization
- Keto meal planning
Continuous Glucose Monitors
Dexcom G7
Real-time continuous glucose monitoring
Medical-grade continuous glucose monitor providing real-time blood sugar readings every 5 minutes. Worn on the upper arm or abdomen. Used by people with diabetes and health-optimizers to understand glucose response to food, exercise, stress, and sleep.
Best For
- Real-time glucose visibility
- Post-meal glucose response
- Exercise impact on glucose
- Sleep glucose patterns
FreeStyle Libre 3
Slim CGM sensor with 24/7 glucose readings
Continuous glucose monitor with a small, discreet sensor worn on the back of the upper arm. Provides 24/7 glucose readings without fingersticks. The Libre 3 is the smallest CGM sensor available and is popular for metabolic health monitoring.
Best For
- Discreet glucose monitoring
- Metabolic health optimization
- Food response testing
- Identifying glucose patterns
Food & Product Scanners
Yuka
Scan food and cosmetics for ingredient quality
Barcode scanner that instantly rates food and cosmetic products based on ingredient quality. Flags additives, ultra-processed ingredients, and harmful chemicals. Provides a simple score and suggests healthier alternatives. Available in 20+ countries.
Best For
- Grocery shopping decisions
- Identifying ultra-processed foods
- Additive awareness
- Cosmetic ingredient safety
Clearya
Flag harmful chemicals in personal care products
Ingredient scanner for personal care products, cosmetics, and household items. Flags harmful chemicals including endocrine disruptors, PFAS, parabens, phthalates, and restricted substances. Available as a browser extension and mobile app.
Best For
- Personal care product safety
- Endocrine disruptor avoidance
- Household chemical screening
- Online shopping safety
Bobby Approved
Clean food scanner by Bobby Parrish
Food scanner app created by Bobby Parrish (FlavCity). Scans grocery products and rates them based on ingredient quality — avoiding seed oils, artificial additives, harmful preservatives, and highly processed ingredients. Focuses on practical clean eating.
Best For
- Seed oil avoidance
- Clean eating grocery shopping
- Identifying hidden additives
- Family-friendly food choices
EWG Healthy Living
Environmental Working Group product ratings
App from the Environmental Working Group for scanning food and personal care products. Rates products based on ingredient safety, pesticide residues, and environmental impact. Includes the EWG Dirty Dozen and Clean Fifteen produce lists.
Best For
- Pesticide awareness
- Personal care safety
- Produce selection
- Environmental impact
Open Food Facts
Open-source global food product database
Open-source food product database and scanner with millions of products worldwide. Provides Nutri-Score ratings, NOVA food processing classification (1–4), and full ingredient lists. The NOVA score is particularly useful for identifying ultra-processed foods.
Best For
- NOVA food processing classification
- International product lookup
- Ultra-processed food identification
- Nutri-Score ratings
Wearables & Recovery
Oura Ring
Sleep, HRV, and recovery tracking ring
Smart ring tracking sleep quality, HRV (heart rate variability), resting heart rate, body temperature, and activity. One of the most accurate consumer sleep trackers available. Provides a daily Readiness Score based on recovery metrics.
Best For
- Sleep quality optimization
- HRV tracking
- Recovery monitoring
- Illness early detection
Fasting & Nutrition
Zero Fasting
Intermittent fasting tracker and coach
Fasting tracker app for logging and managing intermittent fasting windows. Tracks fasting streaks, duration, and provides educational content on fasting protocols. Includes a library of fasting guides and access to health coaching.
Best For
- Intermittent fasting tracking
- Time-restricted eating
- Fasting streak accountability
- Learning fasting protocols
Tools listed here are for informational and educational purposes. We have no financial relationship with any listed company. CGMs and medical devices require a prescription in some jurisdictions — consult your healthcare provider. No tool replaces clinical evaluation.
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