Calm Rhythm
Stress & Sleep Tracker
Free · Designed for iPad. Not verified for macOS.
Now on Apple Watch: see stress, HRV, heart rate, steps, and sleep at a glance—with improved accuracy, icons, and localization.
Calm Rhythm is a stress and sleep tracker that turns your Apple Health data into clear, actionable insights.
• True stress index – estimated from HRV (heart rate variability) and heart rate, not just mood check ins.
• Daily dashboard – see today’s stress level, HRV, heart rate, sleep and steps in one calm home view.
• Trends & scores – weekly and monthly stress, recovery, sleep and activity scores so you notice changes early.
• Professional insights – simple explanations of HRV, cardiovascular health, sleep and recovery based on your data.
• Smart reminders – optional notifications for morning sleep recap, afternoon move reminder and evening wind down.
• Biological age (beta) – an estimate based on sleep, HRV, heart rate and activity patterns.
Calm Rhythm reads data from Apple Health / HealthKit (HRV, heart rate, sleep, steps) and keeps processing on your device. It is designed for wellness and self awareness only and does not provide medical diagnosis or treatment. Always consult a doctor for any medical concerns.
Terms of Service – StressLife：https://superficial-restaurant-956.notion.site/Terms-of-Service-StressLife-321f52245d5580b094acc9998f1cbec4?source=copy_link
Privacy Policy – StressLife：https://superficial-restaurant-956.notion.site/Privacy-Policy-StressLife-321f52245d558070b8c7ece4565c8c5c?source=copy_link
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Added Apple Watch companion app with core metrics (stress, HRV, heart rate, steps, sleep).
- Improved HealthKit data reliability and notification accuracy.
- Refined watch UI (better layout, softer background) and fixed localization and app icon issues.
The developer, 剑炜 陈, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 剑炜 陈
- Size
- 5.7 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 11 more
- English, Arabic, French, German, Indonesian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Thai, Traditional Chinese
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 chenjianwei