Apple Watch (Sleep app)
Tracking of sleep phases, sleep score, health indicators, and potential apnea notifications on compatible models.
- What it is
- Tracking of sleep phases, sleep score, health indicators, and potential apnea notifications on compatible models.
- Best for
- Sleep phase tracking · Heart rate analysis · Sleep apnea detection
- Platforms
- iOS · Apple Watch
Strengths
- Integrated sleep phases and sleep score
- Potential apnea notifications on compatible models
Weak points
- Non-diagnostic apnea alerts
- Requires sleeping with a watch
What is Apple Watch (Sleep app)?
The Apple Watch is a smartwatch developed by Apple, natively integrating an application dedicated to sleep tracking. This tool uses the device's sensors, including the accelerometer and heart rate monitor, to record movement and variations in heart rate during the night.
At a glance
- Type
- Watch / band
- Platforms
- iOS, Apple Watch
- Subscription required
- No
- Free trial
- No
- French
- Yes
- Availability
- France, Canada, United States, Worldwide
- Uses AI
- Yes
- Evidence level
- Partial clinical validation
This information is indicative and may change: only the publisher's own website is authoritative.
What the AI does: Apple uses machine learning models to analyze data from sensors (accelerometer, heart rate, blood oxygen) to detect sleep phases, breathing disturbances, and signs of sleep apnea.
Who uses Apple Watch (Sleep app)?
Apple users
Designed exclusively for owners of iPhone and Apple Watch.
General public
Intended for people wishing to view data on their rest habits.
Key features
Phase tracking
Identification of periods of wake, REM, light, and deep sleep.
Sleep score
Global indicator synthesizing the quality and duration of nightly rest.
Vital signs
Visualization of respiratory rate, heart rate, and wrist temperature.
Apnea alert
Notification signaling potential signs of moderate to severe sleep apnea.
Pricing
The price depends on the Apple Watch model chosen at purchase. No subscription is required for sleep tracking features.
Pricing recorded on October 28, 2026. Excluding taxes and shipping. Prices change: the amount that applies is the one shown by the publisher's own checkout.
Apple Watch (Compatible models)
Variable
The price varies according to the model (Series, Ultra, SE) and connectivity options. No subscription is required for sleep tracking.
- Sleep phase tracking
- Respiratory disturbance detection
- Sleep apnea notifications
- Vitals app
The choice of model depends on the specific sensors required, such as blood oxygen measurement or temperature, which vary by watch generation.
Use cases
Evening routine
Setting reminders to encourage winding down before bedtime.
Outcome: Helps establish a regular sleep schedule.
Historical analysis
Consulting sleep data via the Health app on iPhone.
Outcome: Visualization of long-term trends.
How it works in practice
Tracking setup
- 1Enable the Track Sleep feature in the Sleep app
- 2Set a personalized sleep schedule
- 3Wear the watch during the night
In your daily routine
Apple ecosystem
Native integration with the Health app on iOS.
Known limits
Non-medical use
The device is not a medical device and does not replace a professional diagnosis.
Battery life
Requires battery charge management to ensure nightly tracking.
Consider something else if
- Certified medical devices for sleep disorder diagnosis
- Specialized smart rings
- Contactless sleep sensors
How to use it
Data consultation
Results are accessible directly on the watch or via the Health app on iPhone.
Settings
Sleep settings are modified in the Settings app on the watch.
Frequently asked questions
Can the Apple Watch diagnose sleep apnea?+
No, it can only notify about potential signs of moderate to severe apnea in adults.
What data is measured during the night?+
The watch measures heart rate, respiratory rate, temperature, and blood oxygen levels.
Is sleep tracking automatic?+
It requires the activation of the Track Sleep feature and wearing the watch.
Is the Apple Watch a medical device?+
No, the measurements provided are not intended for medical use or diagnosis.
Where can I check sleep history?+
The full history is available in the Health app on your iPhone.
Sources
Evidence level shown: Partial clinical validation
Sleep apnea notifications are intended to detect moderate to severe signs in adults without prior diagnosis, based on internal clinical studies.
No published source specific to this product has been identified so far.
Background on the approach
General references on the category or technology: they do not cover this specific product.
These references cover the approach or technology, not an evaluation of the product by us. None of these links is an affiliate link. Read our method.
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