POTS Check

POTS Check is a free home wellness screening tool that helps you explore whether you may have Postural Orthostatic Tachycardia Syndrome (POTS) — a condition affecting the autonomic nervous system that causes symptoms like dizziness, rapid heartbeat, and fatigue when standing. Using your Apple Watch and iPhone, POTS Check guides you through the NASA Lean Test, a clinically-recognized screening protocol that monitors your heart rate response when transitioning from lying down to standing. **KEY FEATURES** • Guided NASA Lean Test Protocol Complete a standardized 5-minute baseline (supine) and 10-minute standing test with real-time guidance from your Apple Watch. • Real-Time Heart Rate Monitoring Leverages Apple Watch's heart rate sensor to continuously track your cardiovascular response during the test. • Age-Based Analysis Applies appropriate POTS screening criteria based on your age (pediatric ages 13-19: ≥40 bpm increase; adult ages 20+: ≥30 bpm increase). • Blood Pressure Tracking Optional manual blood pressure entry at key intervals to detect orthostatic hypotension or hypertension. Requires separate BP cuff device. • Health Profile Import baseline vital signs from Apple Health to provide clinical context for your test results. Includes blood pressure history, heart rate variability, resting heart rate, walking heart rate, and respiratory rate. Secure Account only. • Symptom Logging Document symptoms during the standing phase with timestamps for comprehensive reporting. • Two Account Options - Guest Mode: Anonymous single-test option with instant results - Secure Account: Encrypted local storage for unlimited test history, trend charts, Health Profile, and PDF export • Healthcare Provider Reports Generate professional PDF reports suitable for sharing with your doctor. Secure Account can optionally include Health Profile data. • Privacy-First Design All data stays on your device with encryption at rest. No cloud upload required. Privacy-respecting analytics with opt-out capability. • You Own Your Data Export your data in an interoperable format or permanently delete it at any time **IMPORTANT NOTES** POTS Check is a wellness screening tool, NOT a medical device or diagnostic tool. Results are for informational purposes and discussion with your healthcare provider. This app does not diagnose POTS or any medical condition. Blood pressure monitoring requires a separate manual cuff device. Apple Watch does not measure blood pressure. Requires Apple Watch (watchOS 11.6+) and iPhone (iOS 18.6+). **PRIVACY & DATA** • All test data encrypted at rest using industry-standard ChaCha20-Poly1305 • Health Profile data stays on your device (no cloud upload) • Optional privacy-respecting analytics (can be disabled in Settings) • No personal information collected or shared • Full control over data deletion Visit our privacy policy at https://schema.vitalvault.org/legal/privacy for complete data handling information.