Recovery · Cardio Load · Sleep Architecture · Smart Scale Lab

Your body is talking. We made it legible.

Zyvra unifies your autonomic recovery, cardio training load, sleep stages, and multi-frequency body composition into one quiet, considered view — synced seamlessly with Apple Health and Google Fitbit.

Download for iOSExplore The System
4.9 ★
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14+
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AUTONOMIC RECOVERY 87%CARDIO LOAD 7.2 HIGH OUTPUTHRV 68 MS BASELINERESTING HEART RATE 49 BPMREM SLEEP 1H 24MDEEP RECOVERY 1H 45MSMART BIA SCALE 15.8% BODY FATSKELETAL MUSCLE 34.2 KGAPPLE HEALTHKIT DUAL-SYNCGOOGLE FITBIT ENGINEZERO DATA MONETIZATIONAUTONOMIC RECOVERY 87%CARDIO LOAD 7.2 HIGH OUTPUTHRV 68 MS BASELINERESTING HEART RATE 49 BPMREM SLEEP 1H 24MDEEP RECOVERY 1H 45MSMART BIA SCALE 15.8% BODY FATSKELETAL MUSCLE 34.2 KGAPPLE HEALTHKIT DUAL-SYNCGOOGLE FITBIT ENGINEZERO DATA MONETIZATION
The System

Three signals.
One honest picture.

Most fitness apps inundate you with fragmented numbers. Zyvra reveals the biological synthesis between what you expended, how well your autonomic nervous system recovered, and how your body composition adapts.

87%

Autonomic Recovery

87% · Primed & Restored

Continuous nighttime HRV (rMSSD), resting heart rate nadir, and respiratory rate synthesized into a singular morning readiness score before you begin your day.

7.2/10

Cardio Load & Strain

7.2 · High Output Load

Heart rate reserve cardiovascular impulse calculation. Pinpoints acute versus chronic stimulus to prevent overtraining and promote true supercompensation.

7h42m

Sleep Architecture

7h 42m · Deep & REM Restorative

Minute-by-minute hypnogram tracking Awake, REM, Light, and Deep restorative stages. Translates sleep architecture into physical tissue and cognitive neural restoration.

The Morning Ritual

Wake up to
yourself.

Before your day begins, Zyvra has already synthesized your night — every cardiac cycle, respiratory cadence, and sleep stage — and distilled it into a transparent physiological view with actionable depth.

Today Dashboard
Body Composition Lab

Your smart scale scan,
finally worth reading.

Sync automatically from Apple Health-compatible smart scales or log clinic BIA scans. Zyvra converts raw bioelectrical impedance into an evolving physiological map connected directly to your workout strain.

Multi-Frequency BIA AnalysisVerified Scale Sync
Score 84 · Strong & Lean
Total Body Weight74.5 kg▼ 0.8 kg
Skeletal Muscle Mass34.2 kg▲ 0.6 kg
Body Fat Percentage15.8 %▼ 0.9 %
Visceral Fat LevelLevel 6 idxHealthy ≤ 9
Total Body Water46.8 L62.8% Optimum
Basal Metabolic Rate1,740 kcal▲ 24 kcal

"Over the past 30 days, skeletal muscle mass increased by 0.6 kg while body fat dropped by 0.9%. Your basal metabolic rate rose alongside training consistency."

Unified Ecosystem

Everything, in one quiet current.

Zyvra connects seamlessly with Apple HealthKit and Google Fitbit. Our intelligent deduplication engine aligns overlapping sensor timestamps without double-counting your efforts.

♥

Heart Rate & HRV

Continuous · Optical & ECG

🌙

Sleep Stages

Hypnogram · Deep & REM

👣

Cardio Strain & Steps

Active Workouts · Auto-Track

🫁

Vitals & Temperature

SpO₂ · VO₂ Max · Respiration

Proprietary Smart Deduplication Engine

Wearing an Apple Watch and tracking steps on Fitbit or iPhone simultaneously? Zyvra compares interval timestamps and priority weighting, completely eliminating duplicate steps, calories, or heart rate records.

Questions

Before you begin.

Zyvra is optimized for iOS 17+ with deep integration for Apple HealthKit (iPhone & Apple Watch). It also features direct cloud synchronization with Google Health / Fitbit, allowing multi-device households or cross-platform athletes to maintain a unified biometric log.
Direct Channel

Get in touch.
We're here to assist.

Have a question regarding Apple Health synchronization, smart scales, or general inquiries? Send our team a message below.

Send an Inquiry

Direct Line to Zyvra Support & Team

Begin Tonight

Tomorrow morning,
meet yourself.

Download Zyvra on iOS, connect Apple Health or Fitbit, and wake up to a body that finally makes sense.

Download on theApp Store

100% Free · iPhone & Apple Watch Ready · iOS 17+