The World's First Metabolic Digital Twin

Continuous Glucose Intelligence Without Wearing a Needle.

Calibrate with finger-prick readings or real CGM for 14 days. Our biophysical differential equations and calibrated machine learning solve your unique metabolic baseline, digestive enzymes, and food patterns to predict real-time continuous glucose without ongoing needles.

1-Click Fast Login1,000+ Evidence RecipesPredictive Spike AlertsHepatic & Pancreatic ProtocolsMetabolic Circles & Pods
6.1%MARD PrecisionLiterature Benchmark
48 HoursLiver MemoryHellerstein Glycogen Protocol
ZeroSkin NeedlesNon-Invasive Biophysics
100%Private HealthKitOn-Device Encryption
9:41
CGM Live
5G
Metabolix Digital Twin

Today's Telemetry

Telemetry Active
Virtual Glucose
STEADY ➔
108mg/dL
CPT-1 Fat Burning Active · Zero Spike
Liver Glycogen48g / 85g
56% Optimal Reservoir
PEPCK Gene FluxSILENCED
Via Sulforaphane Nrf2
Active DigestionThe Kale Shield
1h 45m leftGastric Delay Buffer
Interactive Web Telemetry Console

Simulate Any Meal Before You Eat

Click below to switch meal scenarios. Watch how our digital twin tracks gastric emptying delays, hepatic glycogen saturation, and PEPCK flux across a full 6-hour timeline.

Active Simulation Target

The Kale Shield Protocol

Flash-Stir-Fried Kale in Avocado Oil + Wild Salmon

Scrubbed Reading (Hour 1)
104mg/dL
Peak Impact104 mg/dL45 mins
Safe Metabolic Zone (70–140 mg/dL)
0h (Pre-Meal Baseline)Hour 1Hour 2Hour 3Hour 4Hour 5Hour 6 (Fasting Recovery)
Interactive Post-Meal Scrub:Scrubbing at Hour 1
Peak Glucose104 mg/dL45 mins
48h Liver Glycogen-4.2g (Depleted)Hellerstein Rolling Model
PEPCK Gene StatusSilenced via Sulforaphane
Lipolysis StateCPT-1 Autophagy Active
Organ-Level Biochemical Mechanism

Sulforaphane activates the Nrf2 transcription factor, physically repressing the PEPCK (PCK1) gene. 38g of healthy MUFA fats and marine omega-3s trigger rapid GLP-1 satiety with zero postprandial glucose spike, blunting overnight hepatic glucose dumping.

Biophysical Mathematics & Machine Learning Engine · How It Works

Calibrate for 14 Days. Then Pure Biophysical Math Predicts.

No generative guessing. Metabolix models human physiology through multi-compartment differential equations, digestive enzyme kinetics, and machine learning parameter regression.

Step 1 · Ground Truth Physiological Ingestion

14-Day Baseline Calibration

During your initial 14-day calibration window, you enter 2–4 daily finger-prick glucometer tests or sync your physical CGM (Dexcom / FreeStyle Libre) alongside Apple Health.

Pair physical CGM or enter routine glucometer finger-prick readings
Passive Apple Health sync: Heart rate, HRV, active calories, sleep architecture & VO2 max
Food logging via meal photos, barcode scans, or quick-select portions
Apple HealthKit Streams
Glucometer & CGM Ground Truth
Differential Equation Solver
Biophysical Math PipelineODEs: dG/dt & dI/dt
Precision: 6.1% MARD
Finger-Prick Glucometer Log
114 mg/dLFasting · 08:15 AM
Apple Watch Telemetry
62 bpm · HRV 54msResting Baseline
Calibration Progress
Day 10 of 1471% Physiological Convergence
Seamless Input · Food Logging Architecture

How Food Logging Actually Works

Logging a meal in Metabolix takes seconds. Here is how your meal data is captured and directly fed into the mathematical biophysical equations.

Method 1

Photo Vision Plate Snap

Point your iPhone camera at your plate. Computer vision identifies dishes (e.g. 2 Roti, 1 bowl Moong Dal, Palak Paneer), detects portion gram weights, and estimates net carbs, fats, and fiber automatically.

LATENCY: 3 SECONDS · AUTO-DECOMPOSITION
Method 2

100,000+ Regional Database

Search our comprehensive library with extensive regional South Asian and global foods — including home-cooked curries, rotis, rice varieties, street snacks, and packaged barcode scanning.

DATABASE: 100K+ REGIONAL STAPLES · BARCODE VERIFIED
Method 3

1-Tap Saved Favorites

Save your regular breakfast (e.g. 3-egg scramble + black coffee) or daily lunch shield. Re-log frequent meals with one single tap on your iPhone or Apple Watch without re-entering ingredients.

SYNC: 1-TAP APPLE WATCH & LOCK SCREEN WIDGET
What Happens Computationally When You Log FoodBiophysical Differential Equation Pipeline
1. Nutrient Extraction

Decomposes meal into starch, soluble fiber, MUFA/SFA fats, and protein.

2. Gastric Half-Life

Computes delayed stomach transit: fat + fiber slow carbohydrate absorption rate.

3. Enzyme Kinetics

Calculates alpha-amylase and alpha-glucosidase rate of intestinal glucose release.

4. ODE Curve Output

Outputs continuous mg/dL forecast curve and early spike warning alerts.

Algorithmic Onboarding · Precision Phenotyping & Fasting

Targeted to Your True Root Cause

Not all diabetes or insulin resistance originates from the same organ. Our clinical onboarding algorithm classifies your primary metabolic phenotype to assign custom fasting and nutritional protocols.

Root Cause: Hyperactive Hepatic GluconeogenesisMorning Fasting Spike Archetype

The Hepatic Glycogen & PEPCK Overdrive Protocol

Characterized by stubborn high fasting glucose in the morning despite eating zero carbs at dinner (the "Dawn Phenomenon"). Caused by overactive PEPCK/G6Pase enzymes dumping liver glycogen into the bloodstream all night.

48-Hour Rolling Buffer

Tracks dietary fat + carb delay from 48 hours prior (the biryani effect) that holds liver glycogen saturated.

Cruciferous PEPCK Silence

Prescribes 10-minute 'Chop & Wait' raw kale/broccoli protocols containing bioavailable sulforaphane to downregulate hepatic glucose dumping.

Calibrated Fasting Protocol: Sunset Circadian Window (14:10 to 16:8)

Finishing dinner by 07:30 PM allows a full 12–14 hour overnight fasting clearance before morning dawn cortisol surges, preventing nocturnal liver glycogen overflow.

1-Minute Clinical Triage

How Onboarding Assigns Your Path

1Fasting vs Post-Meal Analysis: Evaluates your highest glycemic stress point (dawn vs after meals).
2Liver Biomarkers: Factors ALT/AST, triglycerides, and lipid ratios to detect fatty liver glycogen resistance.
3Lifestyle & Shift Work: Adjusts sleep chronotype, circadian meal windows, and high-intensity workout schedule.
Every protocol is dynamic: as your model trains over 14 days, your parameters continuously adapt.
Safety & Clinical Boundary

Program Eligibility & Inclusion Criteria

We operate with complete clinical honesty. Metabolix is extraordinarily effective for specific metabolic archetypes, but is strictly contra-indicated for others.

Who This Program Is Designed For
  • ✓Adults with Prediabetes or Type 2 Diabetes wanting needle-free, continuous lifestyle intelligence.
  • ✓Individuals struggling with high morning fasting blood sugar and dawn phenomenon liver dumping.
  • ✓Metabolic fitness seekers, longevity enthusiasts, and people seeking weight loss without crash diets.
  • ✓Anyone with an iPhone and Apple Watch wanting deep nutritional biochemistry and personalized recipes.
Who CANNOT Use This Program
  • ✕Unmonitored Brittle Type 1 Diabetes: Anyone requiring acute, life-critical clinical insulin dosing without a physical CGM or direct physician oversight.
  • ✕Active Diabetic Ketoacidosis (DKA): Anyone with current or frequent acute ketone emergencies.
  • ✕Pregnancy with Gestational Diabetes without explicit clearance and direct monitoring from an obstetrician/endocrinologist.
  • ✕Minors under 18 years of age without parental and pediatric specialist supervision.
The Metabolic Kitchen · Evidence-Based Nutritional Protocols

Diabetes-Friendly Culinary Protocols

Scientifically calibrated recipes designed to shut down nocturnal liver glucose dumping, maintain maximal satiety, and guarantee flat postprandial curves.

Sulforaphane Engine

The 'Chop & Wait' 10-Minute Rule

Always chop or crush raw kale, broccoli, or cabbage 10 minutes BEFORE heating. This provides crucial ambient time for the plant enzyme myrosinase to synthesize active sulforaphane, making it thermally resilient.

500°F Thermal Integrity

Flash Stir-Fry in High-Heat Avocado Oil

Never cook greens to a dark wilt. Sauté briskly for 2 to 3 minutes in cold-pressed avocado oil so leaves remain bright electric green and phytochemically dense without oxidized lipids.

PEPCK Nocturnal Silence

The 3-Hour Sunset Dinner Gap

Complete your evening meal by 7:30 PM. Going to sleep with an empty digestive lumen deprives the liver of glucogenic alanine and glutamine substrates, silencing nighttime glucose creation.

Zero DAG Insulin Resistance

Strict Saturated Fat Cap (<18g Daily)

Avoid butter, animal tallow, or hydrogenated oils. Palmitic acid forms toxic diacylglycerols (DAG) and ceramides that sever liver insulin receptors. Fuel your metabolism with MUFA fats (Avocado, EVOO, Walnuts).

Interactive Protocol Tool

The "Chop & Wait" 10-Minute Enzyme Timer

Chop your raw kale or broccoli florets right now. Rest them for 10 minutes to allow the plant's myrosinase enzyme to turn glucosinolates into heat-stable, PEPCK-suppressing sulforaphane before turning on the flame.

Interactive Tool · Customize Your Own Recipe

Custom Recipe Builder & Digestive Enzyme Analyzer

Select key culinary bio-compounds to see how they inhibit digestive enzymes and smooth your postprandial glucose curve.

1,000+ Full Database Recipes in App
Alpha-Amylase Inhibition-42% Starch Transit
Vinegar / Acid sequencing delays salivary & pancreatic starch breakdown
Alpha-Glucosidase Delay-36% Intestinal Flux
High-viscosity soluble fibers shield brush-border digestive enzymes
PEPCK Gene Suppression-58% Nocturnal Dump
Raw sulforaphane suppresses overnight hepatic gluconeogenesis
Glycemic Rating: Virtually Flat (A+)Optimal Timing: 07:30 PM

The Kale Shield: Flash Avocado Stir-Fry & Chicken Curry

PEPCK (PCK1) Gene Silencing Protocol · Dawn Phenomenon Blunting & Glycogen Depletion

Carbs52g
Net Carbs42g
Protein30g
MUFA Fat40g
Calibrated Ingredient Portions:
2.5 cups chopped raw kale (170g)
1.5 tbsp Avocado Oil (500°F smoke point)
2 cloves fresh minced garlic
Pinch of black mustard seeds
130g lean chicken breast curry (light tomato gravy)
1 small cup cooked yellow moong dal (150g)
Golden Protocol Rule:The 'Chop & Wait' 10-Minute Rule: Chop raw kale 10 min BEFORE cooking to allow myrosinase to produce active, heat-stable sulforaphane.
Biochemical Mechanism & Organ Impact:

Sulforaphane translocates Nrf2 to hepatocyte nuclei, physically suppressing the PEPCK (PCK1) gene. This blunts nocturnal hepatic glucose dumping, supporting healthy morning glycemic stability.

Culinary Preparation Guide:

Chop kale and let rest 10 min. Flash stir-fry on high flame with avocado oil and mustard seeds for 2–3 minutes only until vibrant emerald green. Pair with chicken curry.

Glycemic Rating: Virtually Flat (A+)Optimal Timing: 07:45 PM

Broccoli Mustard Synergy Bowl with Wild Salmon

Double Myrosinase Enzyme Loading · Hepatic ER Stress Reduction & CPT1 Activation

Carbs22g
Net Carbs14g
Protein42g
MUFA Fat38g
Calibrated Ingredient Portions:
2 cups fresh broccoli florets (rested 10 min)
1 tsp ground yellow mustard seed powder (myrosinase booster)
150g wild Alaskan salmon fillet
1.5 tbsp Extra Virgin Olive Oil
1/2 fresh lemon juice & cracked pink salt
Golden Protocol Rule:Mustard Seed Synergy: Ground mustard seeds replenish the heat-sensitive myrosinase enzyme, tripling sulforaphane bioavailability even after warm cooking.
Biochemical Mechanism & Organ Impact:

Marine EPA & DHA fatty acids reduce endoplasmic reticulum stress in the liver while high oleic acid stimulates GLP-1 secretion in the gut.

Culinary Preparation Guide:

Pan-sear salmon in olive oil skin-down for 4 mins. Steam broccoli lightly for 3 minutes, then toss immediately with raw mustard seed powder, lemon juice, and extra virgin olive oil.

Glycemic Rating: Ultra Low (A)Optimal Timing: 08:30 AM

Spinach & Avocado Scramble with Sprouted Toast

Hepatic Choline & Lipid Export Driver · Triglyceride Clearance & Sustained Satiety

Carbs18g
Net Carbs12g
Protein20g
MUFA Fat30g
Calibrated Ingredient Portions:
2 whole farm eggs + 1 egg white
1.5 cups baby spinach leaves
1 tbsp cold-pressed avocado oil
1/4 sliced fresh ripe avocado (35g)
1 slice thin sprouted sourdough toast (25g)
Golden Protocol Rule:Eat the Whole Egg: High dietary choline from yolks accelerates VLDL transport out of liver cells, curing fatty infiltration.
Biochemical Mechanism & Organ Impact:

High biological value leucine protein protects skeletal muscle without flooding the portal vein with glucogenic alanine.

Culinary Preparation Guide:

Wilt baby spinach in avocado oil for 60 seconds. Whisk eggs and fold gently over medium-low heat. Top sprouted toast with avocado slices.

Glycemic Rating: Ultra Low (A)Optimal Timing: 01:30 PM

Mediterranean Olive & Grilled Herb Chicken Bowl

Polyphenol & GLP-1 Sustained Energy · Zero Postprandial Glucose Surge

Carbs16g
Net Carbs10g
Protein40g
MUFA Fat32g
Calibrated Ingredient Portions:
140g herb-marinated grilled chicken breast
2 cups chopped romaine lettuce & English cucumber
10 Kalamata olives (pitted)
2 tbsp Extra Virgin Olive Oil dressing
1 tbsp apple cider vinegar with raw mother
Golden Protocol Rule:The Vinegar Primer: Acetic acid delays gastric emptying rate by 28% and blocks salivary amylase starch breakdown.
Biochemical Mechanism & Organ Impact:

Oleocanthal in raw olive oil restores hepatocyte insulin receptor phosphorylation, keeping post-lunch glucose strictly between 95 and 115 mg/dL.

Culinary Preparation Guide:

Grill chicken breast until juicy. Toss crisp greens, cucumber, and Kalamata olives in cold-pressed EVOO and raw ACV. Slice chicken on top.

Glycemic Rating: Ultra Low (A)Optimal Timing: 01:00 PM

Sprouted Moong & Avocado Metabolic Chaat

Natural Amylase Inhibitor & Prebiotic Fiber · Microbiome Short-Chain Fatty Acid Production

Carbs28g
Net Carbs18g
Protein18g
MUFA Fat22g
Calibrated Ingredient Portions:
1 cup fresh sprouted green moong beans (steamed 2 mins)
1/2 ripe avocado diced
1/2 cup diced cucumber and Roma tomato
1 tbsp cold-pressed olive oil
Fresh mint, cilantro, roasted cumin, lime juice
Golden Protocol Rule:Sprouting Converts Starch: Sprouting degrades rapid carbohydrates into resistant fiber and boosts polyphenol density by 300%.
Biochemical Mechanism & Organ Impact:

Prebiotic oligosaccharides feed Akkermansia muciniphila in the gut, reinforcing the intestinal barrier and lowering systemic inflammation.

Culinary Preparation Guide:

Steam sprouted moong for 2 minutes to preserve live enzymes. Toss with diced avocado, cucumber, mint, olive oil, and fresh lime juice.

Glycemic Rating: Virtually Flat (A+)Optimal Timing: 05:00 PM

Raw Walnut Halves & Green Tea Catechin Flush

Alpha-Glucosidase Inhibitor Afternoon Ritual · Endothelial Dilation & Insulin Sensitization

Carbs4g
Net Carbs2g
Protein4.5g
MUFA Fat18.5g
Calibrated Ingredient Portions:
30g raw English walnut halves (approx 7–8 whole halves)
1 cup organic loose-leaf green tea brewed 3 mins
Fresh lemon wedge
Golden Protocol Rule:Keep Walnuts Raw: Roasting oxidizes delicate plant ALA omega-3s. Raw walnuts deliver maximal neurovascular protection.
Biochemical Mechanism & Organ Impact:

EGCG catechins inhibit intestinal carbohydrate hydrolases, while plant alpha-linolenic acid (ALA) boosts nitric oxide vascular tone.

Culinary Preparation Guide:

Brew green tea with 85°C water for 3 minutes. Squeeze fresh lemon juice to stabilize catechins. Enjoy with crisp raw walnut halves.

Complete Metabolic Operating System

Every Tool You Need for Daily Control

From real-time spike interception and sports logging to medicine compliance and doctor visit alerts, Metabolix turns physiological science into simple daily habits.

Predictive Spike Interception

Real-Time High-Carb Spike Alerts

When your meal contains fast-acting starch or high glycemic index carbohydrates, the model detects the rapid absorption velocity before glucose peaks in your blood.

Anticipatory Notification: Warns you 20–30 minutes before projected peak, giving you time to act.
12-Minute Postprandial Walk Trigger: Activates muscular GLUT4 transporters for insulin-independent glucose uptake, flattening the spike by up to 34%.
Enzyme Mitigation: Recommends immediate hydration and bioflavonoid/vinegar dosing to downregulate digestive amylase.
Metabolix Live Push AlertLock Screen Telemetry
High-Carb Rise DetectedJust now

Projected peak 168 mg/dL in 35 mins (White Rice + Potato Curry).

12-Min Walk TriggeredEst. Drop: -28 mg/dL
Metabolic Circles · Social Accountability & Group Challenges

Better Health Is Easier Together.

Form private Metabolic Circles with family, friends, or health buddies. Track shared calories, compete in friendly glycemic challenges, and celebrate progress together.

Circle ChallengesSelect Sprints to Join
3 Active Sprints

7-Day Flat Glycemic Curve

Group Goal: >85% Time-in-Range (TIR)
7 Days

Compete with your circle members to achieve optimal postprandial glucose curves. Every meal kept under 140 mg/dL scores points for your team.

10,000 Daily Steps Sprint

Group Goal: Post-Meal GLUT4 Activation
14 Days

Encourage each other to take a brisk 10–15 minute walk right after meals. Synchronized step tracking directly via Apple HealthKit.

Zero Midnight Dumping Challenge

Group Goal: Dinner Finished by 07:30 PM
21 Days

Silence nocturnal PEPCK liver glucose output by completing dinner with cruciferous greens before 7:30 PM. Track collective morning fasting scores.

Automated HealthKit Sync: Steps, time-in-range, and meal windows log automatically to your active challenge.
Family Metabolic Pod 4 Active Members
Group Calorie Burn2,840 kcal↑ 18% vs Last Week
Collective TIR Score89.2%Zero Spikes > 160 mg/dL
Active Circle Leaderboard
Rahul (Dad)Completed 15-min walk
94% TIR12-Day Streak
Ananya (Mom)Logged Kale Dinner Shield
91% TIR9-Day Streak
KaranHIIT Workout Logged
88% TIR6-Day Streak
Private & Encrypted: Circle members only see gamified challenge scores, never private lab records or exact medication details.
Evidence-Based Biophysics

Science-Backed Biophysical Modeling

Engineered for high-fidelity metabolic simulation accuracy through multi-compartment physiological biophysics and 48-hour hepatic glycogen tracking.

MARD 6.1% Precision

Research-Grade Precision

Calibrated to Research Benchmarks with an absolute mean error of only 14.3 mg/dL against published clinical literature.

Hellerstein 1997 Protocol

48-Hour Liver Memory

Models true rolling hepatic glycogen saturation, accounting for delayed fat absorption and nocturnal gluconeogenesis flux.

Zero Third-Party Sharing

100% Private HealthKit

All biometric streams (heart rate, HRV, active calories, sleep) remain encrypted on-device. Zero data broker selling.

Mathematical Calibration

Biophysical Machine Learning

Calibrated machine learning regression solves your unique insulin sensitivity factor and gastric transit parameters over 14 consecutive days.

Metabolix Virtual CGM vs Traditional Technologies

How non-invasive physiological digital twins compare against invasive physical hardware:

Metric & Clinical CapabilityMetabolix Digital TwinInvasive Continuous CGMTraditional Fingerstick Only
Daily Needle Burden90%+ Needle Reduction · Periodic spot calibration only Continuous 24/7 subcutaneous wire in arm/abdomen 4–6 painful punctures every single day (1,500+/yr)
Ground-Truth Calibration Protocol✓ Calibrated via 14-day initial window (real CGM or 2–4 daily finger-pricks), then maintained with weekly spot checksFactory calibrated, but prone to sensor drift & compression lows near day 10–14Zero model learning: discrete snapshots only, misses nocturnal spikes & meal peaks
Recurring Hardware & Sensor CostMinimal strip cost for periodic calibration (~₹200 / $5 mo)₹6,000 – ₹10,000 / month continuously (₹72k–₹1.2L/yr)₹1,500 – ₹2,500 / month in daily high-volume test strips
48-Hour Hepatic Glycogen Saturation Physiological twin predicts PEPCK glucose output Measures interstitial fluid only (blind to liver storage) Blind to liver glycogen & overnight dumping
Skin Barrier & Adhesive ReactionsZero ongoing skin adhesives or adhesive rashesContact dermatitis, sensor rip-outs during showers/sportsFingertip calluses, micro-scarring & localized soreness
Continuous Telemetry & Wearable SyncContinuous on iPhone & Apple Watch via HealthKit ODEsRequires separate proprietary Bluetooth sensor attached to bodyZero continuous curve (isolated static numbers only)
Clinical Ground Truth: How Calibration Actually Works

We do not claim fingersticks are permanently eliminated. Pure mathematical biophysics requires real ground-truth reference points to model your unique physiology. You calibrate Metabolix during an initial 14-day calibration window using either a physical CGM sensor (Dexcom / FreeStyle Libre) or routine finger-prick checks (2–4 daily). Once the mathematical parameters (Insulin Sensitivity Factor, gastric emptying half-life, and enzyme kinetics) are fitted, you only perform occasional weekly spot checks (1–2 finger-pricks per week) to prevent mathematical drift. You eliminate 90%+ of painful needles without sacrificing clinical accuracy.

CLINICAL MEMBERSHIP · ZERO-NEEDLE TELEMETRY

Invest in Your Metabolic Architecture.

Access continuous biophysical glucose modeling, 48-hour hepatic glycogen tracking, and 14-day calibration. Keep 100% of your biometrics encrypted on your Apple device.

RECOMMENDED · 14-DAY CALIBRATION GUARANTEE

Founding Annual Membership

Complete 365-day metabolic digital twin with clinical ODE telemetry, custom recipe engine, and priority iOS TestFlight build access.

₹4,999
billed annuallyEquivalent to ₹416/mo
What's Included:
Full 14-day baseline calibration (real CGM or finger-pricks) + weekly spot checks
Continuous virtual CGM telemetry on iPhone & Apple Watch
48-hour hepatic glycogen tracking & PEPCK gene suppression
Photo vision plate scanner with automated macro decomposition
1,000+ regional South Asian & global evidence recipes
Metabolic Circles: Private family pods & synchronized TIR challenges
High-intensity GLUT4 exercise & doctor clinical export reports
Immediate VIP iOS TestFlight release + Founding Member App Store entitlement

100% Satisfaction Guarantee · Instant Mobile Activation

90-DAY PROTOCOL

Quarterly Reset Pass

Targeted 90-day physiological reset designed for members addressing prediabetes or elevated fasting glucose parameters.

₹1,999
billed every 3 monthsEquivalent to ₹666/mo
What's Included:
14-day initial baseline calibration (finger-prick or CGM) + periodic spot checks
Real-time continuous glucose ODE curve & spike forecasting
Choice of Pancreatic or Hepatic nutritional protocol
Apple HealthKit encrypted sync (HRV, Sleep, Active Calories)
Food database search & barcode scanner for packaged products
Standard community challenge participation
iOS TestFlight beta access during subscription active period

100% Satisfaction Guarantee · Instant Mobile Activation

Save Over ₹72,000 / $1,200 AnnuallyEliminates ₹6,000–₹10,000 monthly ongoing sensor needle replacements and skin adhesive rash.
Apple Health Native 256-bit Encrypted