Apple Watch Ultra features a Depth app that's exclusive to the device. This article tells you what it does and how to use it.

depth gauge ultra watch
The ‌Apple Watch Ultra‌ can be used for dives up to 40 meters deep (130 feet), and the new Depth app for the watch is designed to make the most of recreational underwater activities like snorkeling, underwater pool swims, and shallow free-diving.

The Depth app can provide information on water temperature, current depth, maximum depth, as well as the current time.

It's worth noting that the Depth app isn't a dive computer like the forthcoming Oceanic+ app, so it doesn't provide things like decompression stop information, gas analysis, or other diving functionality. So if you're using it in a situation where it's failure could result in death or personal injury, make sure you have a secondary depth gauge and timer or watch.

Using the Depth App

By default, the Depth app opens automatically when the Apple Watch Ultra is submerged to a depth of 1 meter or more, or you can start a session manually by opening the app.

depth
When the Depth app opens, the Water Lock feature turns on to prevent any accidental input on the screen or with the Digital Crown. For this reason, if you want to record a workout such as an open-water swim, open the Workout app and begin the workout before you submerge your Apple Watch Ultra.

When you're finished, press and hold the Digital Crown to turn off Water Lock and end your session. The screen will unlock, and a series of tones will play to clear any water that remains in the watch speaker.

After your dive, you'll see a dive summary showing how long you spent underwater, your maximum depth, and the water temperature range that you experienced. You can also see water temperature and depth in a timeline within the Health app, but not the other metrics.

How to Disable the Depth App's Auto-Launch Feature

  1. Launch the Settings app on your Apple Watch Ultra.
  2. Tap General, then tap Auto-Launch.
  3. Under "When Submerged," toggle off the switch next to Auto-Launch App.

How to Change the Depth App's Units of Measurement

  1. Launch the Settings app on your Apple Watch Ultra.
  2. Tap Depth.
  3. Choose Feet or Meters for depth, and Fahrenheit or Celsius for temperature.

The Depth app works to a maximum depth of 130 feet (40 meters). If you go below this depth, the screen turns yellow, and some functions of your Apple Watch Ultra might stop working or might work intermittently.

Related Roundup: Apple Watch Ultra 2
Related Forum: Apple Watch

Popular Stories

Apple iPhone 16e Feature

Apple Announces iPhone 16e With A18 Chip and Apple Intelligence, Pricing Starts at $599

Wednesday February 19, 2025 8:02 am PST by
Apple today introduced the iPhone 16e, its newest entry-level smartphone. The device succeeds the third-generation iPhone SE, which has now been discontinued. The iPhone 16e features a larger 6.1-inch OLED display, up from a 4.7-inch LCD on the iPhone SE. The display has a notch for Face ID, and this means that Apple no longer sells any iPhones with a Touch ID fingerprint button, marking the ...
iphone 17 pro asherdipps

iPhone 17 Pro Models Rumored to Feature Aluminum Frame Instead of Titanium Frame

Tuesday February 18, 2025 12:02 pm PST by
Over the years, Apple has switched from an aluminum frame to a stainless steel frame to a titanium frame for its highest-end iPhones. And now, it has been rumored that Apple will go back to using aluminum for three out of four iPhone 17 models. In an investor note with research firm GF Securities, obtained by MacRumors this week, Apple supply chain analyst Jeff Pu said the iPhone 17, iPhone...
apple launch feb 2025 alt

Here Are the New Apple Products We're Still Expecting This Spring

Thursday February 20, 2025 5:06 am PST by
Now that Apple has announced its new more affordable iPhone 16e, our thoughts turn to what else we are expecting from the company this spring. There are three product categories that we are definitely expecting to get upgraded before spring has ended. Keep reading to learn what they are. If we're lucky, Apple might make a surprise announcement about a completely new product category. M4...
Generic iOS 18

Here's When Apple Will Release iOS 18.4

Wednesday February 19, 2025 11:38 am PST by
Following the launch of the iPhone 16e, Apple updated its iOS 18, iPadOS 18, and macOS Sequoia pages to give a narrower timeline on when the next updates are set to launch. All three pages now state that new Apple Intelligence features and languages will launch in early April, an update from the more broader April timeframe that Apple provided before. The next major point updates will be iOS ...
apple launch feb 2025

Tim Cook Teases an 'Apple Launch' Next Wednesday

Thursday February 13, 2025 8:07 am PST by
In a social media post today, Apple CEO Tim Cook teased an upcoming "launch" of some kind scheduled for Wednesday, February 19. "Get ready to meet the newest member of the family," he said, with an #AppleLaunch hashtag. The post includes a short video with an animated Apple logo inside a circle. Cook did not provide an exact time for the launch, or share any other specific details, so...
prioritize notifications ios 18 4

Everything New in iOS 18.4 Beta 1

Friday February 21, 2025 1:08 pm PST by
Apple finally released the first beta of iOS 18.4 to developers for testing purposes, and while the beta is lacking some of the Apple Intelligence features we were hoping for, there are some notable new additions. Subscribe to the MacRumors YouTube channel for more videos. Priority Notifications - Apple Intelligence There is a new Priority Notifications feature that can show you your most...
apple c1

Apple Unveils 'C1' as First Custom Cellular Modem

Wednesday February 19, 2025 8:08 am PST by
Apple today announced its first custom cellular modem with the name "C1," debuting in the all-new iPhone 16e. The new modem contributes to the iPhone 16e's power efficiency, giving it the longest battery life of any iPhone with a 6.1-inch display, such as the iPhone 15 and iPhone 16. Expanding the benefits of Apple silicon, C1 is the first modem designed by Apple and the most...
iPhone 16e Feature

Apple Denies Speculation Surrounding iPhone 16e's Lack of MagSafe

Friday February 21, 2025 8:01 am PST by
Apple has confirmed that its custom-designed C1 modem in the iPhone 16e has nothing to do with the device's lack of MagSafe support, according to Macworld. Following the launch of the iPhone 16e, there was some speculation online about how MagSafe magnets might have interfered with the C1 modem's cellular connectivity performance, and this was considered to be a potential reason for the...