Stay on top of your health with BloodO₂ — the fastest, most seamless way to view your blood oxygen readings.

• Clear charts, instant data – See your latest 25 readings in real time, stored and synced instantly from HealthKit.
• Always up to date – As soon as a new SpO₂ sample is recorded, it syncs to your Apple Watch for immediate viewing.
• Daily averages – Compare Today vs Yesterday at a glance to better understand your wellness trends.
• Designed for Apple Watch – Lightweight, fast, and glanceable.
• Private & secure – Data stays on your device, only using Apple’s secure HealthKit storage.

Perfect for anyone tracking sleep, fitness, or overall wellness, BloodO₂ makes your oxygen readings more accessible than ever.