
Zyvra
Calorie & Macro Tracker
0 ratings
Free
About
Unlock precision human performance. Zyvra transforms raw biometric data from Apple Health and your smart scale into clear, actionable intelligence for daily cardio load, recovery, sleep, and body composition.
Stop guessing how hard to push or when to recover. Whether training for peak athletic performance, optimizing body composition, or improving long-term vitality, Zyvra gives you the physiological clarity to train smarter, rest deeper, and progress faster.
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KEY FEATURES
1. DAILY CARDIO LOAD & EXERTION
Know exactly how much exertion your cardiovascular system absorbs each day.
• Active & Passive Load: Quantifies dedicated workout exertion alongside daytime non-workout movement.
• Dynamic Exertion Targets: Calibrated daily based on your morning recovery so you never overtrain or undertrain.
• Heart Rate Zone Tracking: Continuous cardiac monitoring to measure aerobic and anaerobic impact in real time.
2. HRV RECOVERY & READINESS
Wake up to a comprehensive assessment of your autonomic nervous system.
• Recovery Score (0–100%): Clear Green, Moderate, or Rest indicators to guide your day.
• Resting HRV vs. Baseline: Measures Heart Rate Variability (SDNN) against your personal 30-day baseline.
• Biometric Vitals: Continuously monitors Resting Heart Rate (RHR), Blood Oxygen (SpO2), Respiratory Rate, and Sleeping Wrist Temperature trends.
3. CLINICAL SLEEP LAB
Understand the restorative quality of your sleep, not just the duration.
• 4-Stage Sleep Architecture: Accurate breakdowns of Deep, REM, Light, and Awake cycles.
• Sleep Performance Score: Evaluates duration, consistency, and restorative sleep stages against your physiological need.
• Sleep Efficiency & Timeline: Detailed interactive charts displaying uninterrupted sleep phases and sleep onset.
4. SMART SCALE & BODY LAB (BIA)
Direct bioimpedance integration to track what you're actually made of.
• Comprehensive Body Metrics: Syncs Weight, Body Fat %, Skeletal Muscle Mass, Visceral Fat Level, BMI, and Total Body Water.
• Smart Scale Compatible: Automatically imports scans from Apple Health, InBody®, Withings®, and major smart scales.
• Body Composition Trends: Track true muscle gain and fat loss over time, independent of water weight fluctuations.
5. NUTRITION & ENERGY BALANCE
Close the loop between energy expenditure and nutritional intake.
• Live Calorie & Macro Tracking: Monitor Protein, Carbohydrates, and Fats alongside your real-time active burn.
• Energy Balance Equation: Real-time comparison of intake versus metabolic rate and exercise burn.
• Fast Food & Barcode Logging: Seamlessly record meals and hydration in seconds.
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SEAMLESS WEARABLE & HEALTH INTEGRATION
Zyvra connects directly with Apple Health and your favorite connected devices to read and sync your metrics automatically:
• Apple Watch & Apple Health: Continuous heart rate, HRV, workouts, sleeping wrist temperature, SpO2, and daily steps
• Google / Fitbit: Seamless synchronization for daily activity, sleep tracking, and resting vitals
• Smart Scales & BIA Analyzers: Instant import of Weight, Body Fat %, and Skeletal Muscle Mass (InBody®, Withings®, and major smart scales)
• Multi-Source Deduplication: Smart conflict resolution ensures your metrics are never counted twice
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PRIVACY FIRST
Your physiological data belongs solely to you.
• End-to-end encrypted storage
• Zero third-party ad trackers
• Your health and biometric data is never sold or shared
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*Note: Zyvra integrates with the Apple Health app (HealthKit) to deliver continuous recovery, cardio load, sleep, and body composition analytics. Zyvra is designed for fitness and wellness purposes only and is not intended to diagnose, treat, cure, or prevent any medical condition. Always consult with a qualified healthcare professional before starting any new exercise or nutrition regimen.*
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What's New in Zyvra
1.2
October 5, 2026
Just a little tune-up to keep everything running smoothly ._.










