How to use the Depth app on Apple Watch Ultra


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Apple Watch Ultra comes with an exclusive Depth app for underwater recreational activities such as snorkeling. How to use it.

Apple’s support page warns that the Depth app is not a diving computer. It does not provide information about decompression stops, gas analysis or other data that divers need.

However, the Apple Watch Ultra and its depth sensor can work with third-party apps that do function as dive computers for recreational diving. It complies with EN13319, which is an internationally recognized standard for dive computers and gauges.

The Depth app shows the current time, current depth, maximum depth reached for the session and water temperature. The depth sensor on the Apple Watch Ultra is accurate to plus or minus 1 meter.

It works to a maximum depth of 130 feet or 40 meters. The Apple Watch Ultra screen will turn yellow below this depth, and some features may be impaired or stop working.

Using the Depth app

The Depth app can automatically open when it detects that the Apple Watch Ultra has been submerged to a depth of one meter or more. Users can also manually start a dive session by opening the app or pressing the action button.

To configure the automatic opening of the Depth app:

  1. Open Settings on the Apple Watch Ultra.
  2. Press on Generaland then press Automatic start.
  3. It is called a shift Auto-start app which users can turn on and off.
Configuration of automatic start

Configuration of automatic start

To change the units of measurement for the Depth app:

  1. Open Settings on the Apple Watch Ultra.
  2. Press on Depth.
  3. choose between Feet or Metersas well as Fahrenheit or Celsius.

Before and after a dive

Users who want to record a workout during their session, such as Open Water Swim, should open the Workout app and start the workout before submerging the Apple Watch Ultra.

Change of measurement units

Change of measurement units

Once the Depth app has been opened, automatically or manually, Water Lock for Apple Watch Ultra turns on to prevent accidental input on the screen or with the Digital Crown.

Press and hold the Digital Crown to disable Water Lock and end the dive session. The screen unlocks and the watch emits certain sounds to clear water from the speaker.

After the dive, the Depth app displays a dive summary to show time spent underwater, maximum depth reached and the water temperature range experienced during the session.

Once the overview has been dismissed, users can find water temperature and depth data in the Health app.

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