Simple Health Export
Simple Health Export is a local-first iOS and iPadOS app that reads your curated Apple HealthKit metrics and exports them into ISO 8601 week-partitioned (YYYY-Www) CSV and JSON Lines (.jsonl) files directly to your device and your personal Google Drive.
Curated Health Metrics Exported
1. Resting HR & HRV (SDNN)
Daily resting heart rate and overnight/daily heart rate variability (average, min, max, and sample counts).
2. Sleep Stages & Duration
Nightly sleep sessions and granular stage intervals (REM, Deep, Core, Awake, and Time in Bed).
3. Heart Notifications & ECGs
Low, high, and irregular rhythm notifications plus full Apple Watch ECG voltage waveforms (.csv).
4. All Workouts
Walking, running, cycling, hiking, strength training, heart rate zones, effort scores, METs, and distance.
5. VO2 Max & Cardio Recovery
Cardio fitness (VO2 max) estimates and 1-minute post-workout heart rate recovery trends.
6. Body Weight & Vitals
Body mass, body fat %, lean mass, overnight sleeping wrist temperature, respiratory rate, SpO2, and daily steps.
Local-First Architecture & Google Drive Integration
Zero External Servers: Simple Health Export runs 100% locally on your iPhone or iPad. There is no intermediate backend server, cloud database, or analytics service.
Least-Privilege Google Drive Scope (drive.file): When you connect your Google account, Simple Health Export requests only the narrow https://www.googleapis.com/auth/drive.file OAuth 2.0 scope. This allows the app to create and update only the AppleHealthExport/ folder and weekly CSV/JSONL files it generates—it cannot view or access any other files in your Google Drive.
SHA-256 Delta Sync: Each weekly file is hashed locally before upload so automated background or iOS Shortcuts runs only upload weeks whose data has changed.