Apple Watch Ultra User Guide
- Welcome
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- Apple Watch Ultra gestures
- Set up and pair your Apple Watch Ultra with iPhone
- Choose a function for the Action button on Apple Watch Ultra
- The Apple Watch app
- Charge Apple Watch Ultra
- Turn on and wake Apple Watch Ultra
- Lock or unlock Apple Watch Ultra
- Change language and orientation on Apple Watch Ultra
- Remove, change, and fasten Apple Watch bands
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- Apps on Apple Watch Ultra
- Open apps
- Organize apps
- Get more apps
- Tell time
- Status icons
- Control Center
- Use Focus
- Adjust brightness, text size, sounds, and haptics
- See and respond to notifications
- Change notification settings
- Manage your Apple ID
- Use shortcuts
- Set up Handwashing
- Connect Apple Watch Ultra to a Wi-Fi network
- Connect to Bluetooth headphones or speakers
- Hand off tasks from Apple Watch Ultra
- Unlock your Mac with Apple Watch Ultra
- Unlock your iPhone with Apple Watch Ultra
- Use Apple Watch Ultra without its paired iPhone
- Use your Apple Watch Ultra with a cellular network
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- Alarms
- Blood Oxygen
- Calculator
- Calendar
- Camera Remote
- Compass
- Contacts
- Depth
- ECG
- Medications
- Memoji
- News
- Now Playing
- Reminders
- Stocks
- Stopwatch
- Timers
- Tips
- Voice Memos
- Walkie-Talkie
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- About Wallet
- Apple Pay
- Set up Apple Pay
- Make purchases
- Send, receive, and request money with Apple Watch Ultra (U.S. only)
- Manage Apple Cash (U.S. only)
- Use Wallet for passes
- Use rewards cards
- Pay with Apple Watch Ultra on Mac
- Ride transit
- Use your driver’s license or state ID
- Use digital keys
- Use COVID-19 vaccination cards
- Weather
- World Clock
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- VoiceOver
- Set up Apple Watch Ultra using VoiceOver
- Apple Watch Ultra basics with VoiceOver
- Apple Watch Mirroring
- Control nearby devices
- AssistiveTouch
- Use a braille display
- Use a Bluetooth keyboard
- Zoom
- Tell time with haptic feedback
- Adjust text size and other visual settings
- Adjust motor skills settings
- Set up and use RTT
- Accessibility audio settings
- Use accessibility features with Siri
- The Accessibility Shortcut
- Copyright
Receive retrospective ovulation estimates with Apple Watch Ultra
When worn to sleep each night, your Apple Watch Ultra can track temperature changes and use this data to help improve period predictions and provide retrospective ovulation estimates (not available in all regions*).
Important: The Cycle Tracking app should not be used as a form of birth control. Data from the Cycle Tracking app should not be used to diagnose a health condition.
Set up wrist temperature tracking
Set up Cycle Tracking and Sleep.
To establish a temperature baseline, ensure the Sleep Focus is on, then wear your Apple Watch Ultra while sleeping.
Wrist temperature data will be available after about five nights.
To view wrist temperature data, open the Health app on your iPhone, tap Browse, tap Body Measurements, then tap Wrist Temperature.
Retrospective ovulation estimates should be available after about two menstrual cycles of wearing your Apple Watch Ultra to sleep each night.
Note: Your body temperature naturally fluctuates, and can vary from night to night due to a number of variables. Wrist temperature can also be impacted by external factors like your sleep environment.
Turn off wrist temperature for Cycle Tracking
Open the Health app on your iPhone, tap Browse, then tap Cycle Tracking.
Tap Options, then turn off Use Wrist Temperature.
If you turn off wrist temperature tracking, you’ll no longer receive retrospective ovulation estimates and wrist temperature data will not be used for period predictions.
For more information, see the Apple Support article Track your nightly wrist temperature changes with Apple Watch.