Blood Oxygen SpO2 Tracker app analytics for April 21

Blood Oxygen SpO2 Tracker shows your blood oxygen (SpO₂) readings from Apple Health on iPhone and Apple Watch. Review recent values, historical trends, and notable outliers in a focused, easy-to-scan interface. Features: Latest SpO₂ reading on iPhone and Apple Watch Widgets and complications for quick access History views with daily values, 7-day averages, and min/max charts Low-value alerts with a custom threshold Insights for outliers and value distribution Barometric pressure and altitude context for better interpretation Your data stays on your device Requirements: Apple Watch Series 6 or later Access to Apple Health blood oxygen data Notifications are optional for low-value alerts Important: The app does not measure blood oxygen by itself. It displays existing SpO₂ data from Apple Health and is intended for personal wellness tracking, not diagnosis. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/