All-in-one health data
HRV, heart rate, sleep, and activity — clear at a glance
Stress & HRV Monitor for Apple Watch
Track your stress, HRV, and recovery with insights built around your personal baseline.
Download on the App Store
HRV
Personal baseline
Watch
Built for Apple Watch
Local
On-device privacy
Built for Apple Watch
Stress, HRV, heart rate, and daily habits — at a glance
Face
Stress
HRV
Heart Rate
Steps
Energy
Water
Track Stress with Your Apple Watch
Stress uses HRV and heart rate data from Apple Health to help you understand changes in your stress throughout the day.
Personal Stress Baseline
Your stress is interpreted in the context of your own history rather than a generic number.
See Stress Trends Throughout Your Day
See how stress rises and settles through the day — against your own pattern, not a one-size range.
Track HRV Against Your Personal Baseline
Personal Insights
See daily changes in stress, HRV, and recovery in the context of your personal baseline.
Understand Stress, Recovery, and Sleep
Sleep, breathing, and daily activity — in one place
Sleep insights
Understand sleep quality and recovery, night by night
Calm in a few breaths
Guided breathing and focus sessions when you need a reset
Daily activity
Rings, steps, water, and mood — tracked together
Private by Design
Your health data stays on your devices. Stress does not upload your Health data to our servers.
Health Data Stored Locally
iCloud syncs settings only
No Health Data Uploads
No Ads
Stress guides
Short reads on Apple Watch stress, HRV, and your baseline
- The Complete Guide to Apple Watch Stress Monitoring
- Stress vs typical Apple Watch stress apps: algorithm, stability, and size
- Apple Watch stress monitoring, explained simply
- What HRV means for everyday stress
- Resting heart rate and stress: what to watch
- Your normal HRV is personal
- Low HRV: start with context, not alarm
Built for everyday stress awareness
Public beta is open — try stress trends, HRV insights, and Watch faces before App Store launch.
"I finally see when stress rises during the day, not just how I feel after the fact."
Beta tester
"The Watch face makes stress and HRV easy to check without opening the phone."
Watch user
"Knowing health calculations stay on my devices makes me comfortable using it daily."
Privacy-first user