Your metabolism,
on your wrist.
The only app that syncs your Apple Watch biometrics with Artificial Intelligence for precise, frictionless weight loss.
1. Dynamic Dashboard
Real-time view of Deficit, Macros, Health Indices, and Temporal Groupings.
Date Range Groupings
Aggregated bar chart transmuting daily data when looking at weekly or monthly periods. Includes dynamic tooltips with HRV cross-reference.
Critical Substances Alert
Proactive alerts for high Sugar or Cholesterol intake, detailing exactly which foods were the top offenders for the day.
Fat Loss Readiness
An intelligent Burn Index (0-100) based on your sleep quality, HRV (stress), and steps taken.
2. Dr. Chama (Intelligence & Coaching)
Your virtual persona providing prescriptive metabolic insights.
- Biological Context: The AI tutor automatically ingests your current biological context (e.g., HRV, sleep quality, current deficit).
- Prescriptive Feedback: Receive actionable advice, like focusing on hydration or reducing deficit on low-HRV days to protect lean muscle mass.
3. Multimodal Logger & Search
Frictionless food insertions with powerful fallback AI architecture.
AI Fallback Architecture
Searches local cache first, then TACO (Unicamp) database, falling back to Llama AI for global portals, and Gemini for vision/audio extraction.
Top 5 Offenders
A scoreboard showing the 5 food families that brought the highest caloric load across a selected date range.
Mass Logging
Easily check "For all days in range" to perform batch insertions of a single food, ideal for meal-prep routines.
4. Ecosystem Extensions
Quick mirroring of your metabolism on iPhone and Apple Watch.
- iOS Home & Lock Screen Widgets: Instantly check your Deficit Ring, Macros, and Burn Index through background Timeline updates.
- Apple Watch Dashboard: Standalone wrist macro bars and the daily ring complications updated in the background.
- Siri Quick Log: Dictate directly from your watch to log food effortlessly (e.g., "I ate a cheese bread").
5. Journeys & Preventive Health
Custom parameterization of time frames to align caloric theory with reality.
Retroactive Start Date
Pull your actual starting weight from HealthKit by setting a journey to start in the past.
Theoretical vs Actual Burn
Visual chart comparing your Theoretical Accumulated Deficit against your Actual Weight Moving Average to dampen water retention distortions.
6. Settings & Endocrine Onboarding
Endocrine predictive engine adjustments for safe weight loss.
- Metabolic Adaptation: The app detects Polycystic Ovary Syndrome (PCOS) or history of long diets during onboarding.
- Safety Reducer: Automatically injects a 15% reducer over the standard Mifflin BMR to protect endocrine function.
- Goal Locking: Prevents aggressive goals to minimize metabolic damage and rebound weight gain.
Frequently Asked Questions
Everything you need to know about How2Burn AI.
How2Burn is an advanced AI-powered wellness companion that syncs your Apple Watch biometrics with state-of-the-art AI. It tracks your caloric balance, macronutrients, and WHO food safety guidelines in real-time, helping you achieve a sustainable caloric deficit.
How2Burn integrates natively with Apple HealthKit. It automatically retrieves your Basal Metabolic Rate (BMR) and Active Energy Burn from your Apple Watch, calculating your total daily energy expenditure (TDEE) dynamically without manual input.
Using advanced Gemini generative AI, How2Burn allows you to log meals by simply speaking (natural voice logging) or snapping a photo. The AI automatically analyzes the descriptions and images, converting them into structured nutritional data including proteins, carbs, fats, sugars, and additives.
Yes. How2Burn actively monitors your food log against official World Health Organization (WHO) and scientific guidelines. It alerts you regarding excessive intake of added sugars, cholesterol, processed meats, and artificial food additives to protect your long-term cardiovascular health.
Ready to transform your metabolism?
Download How2Burn AI now on the App Store and start tracking your fitness with frictionless intelligence.