Vital2AI

Vital2AI is a powerful, privacy-first iOS application designed to help users export their Apple Health data into clean, AI-ready CSV files.

Features

• Comprehensive Data Export: Export daily summaries for a wide range of 90+ HealthKit metrics (steps, heart rate, sleep, nutrition, and more).
• Workout Details: Dedicated export for workout history, including duration, distance, and heart rate zones.
• Privacy First: All data processing happens on-device. No data is ever sent to a server.
• AI-Ready Format: CSV files are formatted specifically to be easily ingested and analyzed by LLMs and data analysis tools.
• Biometric Protection: Secure your exported data with FaceID or TouchID.
• Automatic Cleanup: Exported files are temporarily stored and automatically deleted for maximum security.

Privacy

Privacy is a core tenet of this project.

• On-Device Processing: All calculations and CSV generations are performed locally on your iPhone.
• No Analytics: We do not track usage or collect any personal information.
• Secure Handling: Exported files are stored in the app's temporary directory and are removed once they are no longer needed.

Full Metrics List

Health Data

stepCount | distanceWalkingRunning | flightsClimbed | appleExerciseTime | appleStandHour | appleStandTime | appleRingsCompleted | bodyMass | bodyMassIndex | bodyFatPercentage | leanBodyMass | waistCircumference | heartRate | restingHeartRate | heartRateVariabilitySDNN | walkingHeartRateAverage | vo2Max | heartRateRecoveryOneMinute | calculatedHeartRateDecelerationIndex | bloodPressureSystolic | bloodPressureDiastolic | oxygenSaturation | peripheralPerfusionIndex | respiratoryRate | basalBodyTemperature | bodyTemperature | electrocardiogramCount | electrocardiogramAtrialFibrillationCount | atrialFibrillationBurden | electrocardiogramAverageHeartRate | electrocardiogramClassification | sleepStart | sleepAnalysis | sleepDeep | sleepCore | sleepREM | awakeDuringSleep | awakeningsCount | appleSleepingWristTemperature | breathingDisturbances | lowHeartRateEvent | highHeartRateEvent | irregularHeartRhythmEvent | lowCardioFitnessEvent | falls | reportedSymptoms | walkingSpeed | walkingAsymmetryPercentage | walkingDoubleSupportPercentage | walkingStepLength | stairAscentSpeed | stairDescentSpeed | walkingSteadiness | sixMinuteWalkDistance | distanceCycling | swimmingDistance | wheelchairDistance | timeInDaylight | environmentalAudioExposure | headphoneAudioExposure | uvExposure | mindfulMinutes | averageStateOfMindValence | electrodermalActivity | basalEnergyBurned | activeEnergyBurned | dailyCalories | dietaryEnergyConsumed | waterIntake | dietaryCaffeine | numberOfAlcoholicBeverages | dietaryProtein | dietaryCarbohydrates | dietaryFatTotal | dietaryFatSaturated | dietaryFatMonounsaturated | dietaryFatPolyunsaturated | dietaryFiber | dietarySugar | dietaryCholesterol | dietarySodium | dietaryVitaminA | dietaryVitaminB6 | dietaryVitaminB12 | dietaryVitaminC | dietaryVitaminD | dietaryVitaminE | dietaryVitaminK | dietaryFolate | dietaryBiotin | dietaryCalcium | dietaryIron | dietaryMagnesium | dietaryPotassium | dietarySelenium | dietaryIodine | dietaryZinc

Workouts

startDate | workoutActivityType | duration | totalDistance | elevationGain | averageSpeed | averagePace | averageHeartRate | minimumHeartRate | maximumHeartRate | heartRateRecovery | workoutEffortScore | workoutEffortClassification | heartRateZone1Duration | heartRateZone2Duration | heartRateZone3Duration | heartRateZone4Duration | heartRateZone5Duration

Note on Heart Rate Deceleration Index (DC)

Caution

EXPERIMENTAL METRIC: The calculatedHeartRateDecelerationIndex is currently the only metric in this export that is calculated on-device by the app itself rather than being a direct value from Apple Health. While the calculation follows the established PRSA method, it is not guaranteed to be correct and has not been clinically validated. It should be used for informational and research purposes only.

Vital2AI calculates the Deceleration Capacity (DC) of the heart, a recognized prognostic marker of autonomic nervous system health. This metric is derived from heartbeat-to-beat interval (RR) data captured via HKHeartbeatSeriesSample.

The calculation follows the Phase-Rectified Signal Averaging (PRSA) method:

1. Anchor Point Selection: We identify points i where the current heartbeat interval is longer than the previous one ($RR_i > RR_{i-1}$), signaling a deceleration.
2. Formula: For each valid anchor point, the contribution is calculated as: $$DC_i = \frac{RR_i + RR_{i+1} - RR_{i-1} - RR_{i-2}}{4}$$
3. Gap Handling: Any data point preceded by a gap (as tagged by HealthKit) is excluded to ensure temporal continuity.
4. Final Index: The daily value is the average of all $DC_i$ calculated throughout the day, expressed in milliseconds (ms).

AI Experiment

This application is an experiment in AI-assisted development, created using:

• Logo: Nano Banana
• UI Design: Google Stitch
• Code: Antigravity with Gemini 3
• Content & Copy: Gemini 3
• AI Rules: Gemini CLI Templates

Medical Disclaimer

This app is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

License

Distributed under the MIT License. See LICENSE for more information.

Created by Alexis Galbourdin.