Apple Watch Ultra 'Depth' and 'Siren' Apps Appear on App Store Ahead of Device's Launch This Friday

Apple has listed two new apps on the App Store that are made exclusively for the Apple Watch Ultra: "Siren" and "Depth."

siren depth apps
Siren is designed for emergency situations if users become lost or injured to draw attention to their location. When the Action button on Apple Watch Ultra is long-pressed, Siren emits a unique 86-decibel sound pattern which can be heard up to 600 feet (180 meters) away.

The Depth app is for use during recreational underwater activities to 130 feet (40 meters), from snorkeling, and free diving, to simply playing in a swimming pool.

Users can see their current depth, water temperature, duration under water as well as the maximum depth they've reached to 130 feet (40 meters). It can automatically activate as soon as Apple Watch Ultra is submerged, or manually launched like any other app.

The two apps are exclusively for Apple Watch Ultra models, which launch on Friday, September 23, so they can't actually be used by the general public yet.

Apple Watch Ultra models will come with the two apps pre-installed, and if users opt to delete the stock apps and then change their minds, they'll be able to re-download both from the App Store.

Priced at $799, the ‌Apple Watch Ultra‌ is available in a single 49mm size, with Trail, Ocean, and Alpine band options available. The new smartwatch can be pre-ordered now and launches alongside the second-generation AirPods Pro this coming Friday. For more on the ‌Apple Watch Ultra‌'s design and features, be sure to check out our dedicated roundup.

Related Roundup: Apple Watch Ultra 3
Related Forum: Apple Watch

Popular Stories

iOS 26

15 New Things Your iPhone Can Do in iOS 26.2

Friday December 5, 2025 9:40 am PST by
Apple is about to release iOS 26.2, the second major point update for iPhones since iOS 26 was rolled out in September, and there are at least 15 notable changes and improvements worth checking out. We've rounded them up below. Apple is expected to roll out iOS 26.2 to compatible devices sometime between December 8 and December 16. When the update drops, you can check Apple's servers for the ...
ios 18 to ios 26 upgrade

Apple Pushes iPhone Users Still on iOS 18 to Upgrade to iOS 26

Tuesday December 2, 2025 11:09 am PST by
Apple is encouraging iPhone users who are still running iOS 18 to upgrade to iOS 26 by making the iOS 26 software upgrade option more prominent. Since iOS 26 launched in September, it has been displayed as an optional upgrade at the bottom of the Software Update interface in the Settings app. iOS 18 has been the default operating system option, and users running iOS 18 have seen iOS 18...
iOS 26

Apple Seeds iOS 26.2 and iPadOS 26.2 Release Candidates to Developers and Public Beta Testers

Wednesday December 3, 2025 10:33 am PST by
Apple today seeded the release candidate versions of upcoming iOS 26.2 and iPadOS 26.2 updates to developers and public beta testers, with the software coming two weeks after Apple seeded the third betas. The release candidates represent the final versions of iOS 26.2 and iPadOS 26.2 that will be provided to the public if no further bugs are found during this final week of testing....
Photos App Icon Liquid Glass

John Gruber Shares Scathing Commentary About Apple's Departing Software Design Chief

Thursday December 4, 2025 9:30 am PST by
In a statement shared with Bloomberg on Wednesday, Apple confirmed that its software design chief Alan Dye will be leaving. Apple said Dye will be succeeded by Stephen Lemay, who has been a software designer at the company since 1999. Meta CEO Mark Zuckerberg announced that Dye will lead a new creative studio within the company's AR/VR division Reality Labs. On his blog Daring Fireball,...
iOS 26

When Will Apple Release iOS 26.2?

Monday December 1, 2025 4:37 pm PST by
We're getting closer to the launch of the final major iOS update of the year, with Apple set to release iOS 26.2 in December. We've had three betas so far and are expecting a fourth beta or a release candidate this week, so a launch could follow as soon as next week. Past Launch Dates Apple's past iOS x.2 updates from the last few years have all happened right around the middle of the...
maxresdefault

iPhone Fold: Launch, Pricing, and What to Expect From Apple's Foldable

Monday December 1, 2025 3:00 am PST by
Apple is expected to launch a new foldable iPhone next year, based on multiple rumors and credible sources. The long-awaited device has been rumored for years now, but signs increasingly suggest that 2026 could indeed be the year that Apple releases its first foldable device. Subscribe to the MacRumors YouTube channel for more videos. Below, we've collated an updated set of key details that ...
Intel Inside iPhone Feature

Apple's Return to Intel Rumored to Extend to iPhone

Friday December 5, 2025 10:08 am PST by
Intel is expected to begin supplying some Mac and iPad chips in a few years, and the latest rumor claims the partnership might extend to the iPhone. In a research note with investment firm GF Securities this week, obtained by MacRumors, analyst Jeff Pu said he and his colleagues "now expect" Intel to reach a supply deal with Apple for at least some non-pro iPhone chips starting in 2028....
ive and altman

Jony Ive's OpenAI Device Barred From Using 'io' Name

Friday December 5, 2025 6:22 am PST by
A U.S. appeals court has upheld a temporary restraining order that prevents OpenAI and Jony Ive's new hardware venture from using the name "io" for products similar to those planned by AI audio startup iyO, Bloomberg Law reports. iyO sued OpenAI earlier this year after the latter announced its partnership with Ive's new firm, arguing that OpenAI's planned "io" branding was too close to its...
iphone air camera

iPhone Air's Resale Value Has Dropped Dramatically, Data Shows

Thursday December 4, 2025 5:27 am PST by
The iPhone Air has recorded the steepest early resale value drop of any iPhone model in years, with new data showing that several configurations have lost almost 50% of their value within ten weeks of launch. According to a ten-week analysis published by SellCell, Apple's latest lineup is showing a pronounced split in resale performance between the iPhone 17 models and the iPhone Air....
iPhone 17 Pro Cosmic Orange

iPhone 17 Pro Lost a Camera Feature Pro Models Have Had Since 2020

Thursday December 4, 2025 5:18 am PST by
iPhone 17 Pro models, it turns out, can't take photos in Night mode when Portrait mode is selected in the Camera app – a capability that's been available on Apple's Pro devices since the iPhone 12 Pro in 2020. If you're an iPhone 17 Pro or iPhone 17 Pro Max owner, try it for yourself: Open the Camera app with Photo selected in the carousel, then cover the rear lenses with your hand to...

Top Rated Comments

Gmaster Avatar
42 months ago
“…Siren emits a unique 86-decibel sound pattern…”
My mom needs this sound as her ringtone so she doesn’t miss calls.
Score: 18 Votes (Like | Disagree)
WiiDSmoker Avatar
42 months ago

Apple Watch Ultra models will come with the two apps pre-installed, and if users opt to delete the stock apps and then change their minds, they'll be able to re-download both from the App Store.

Jesus
Thanks Jesus

Seth
Score: 13 Votes (Like | Disagree)
Urbanpixels Avatar
42 months ago

They don’t come pre installed?
Apple Watch Ultra models will come with the two apps pre-installed, and if users opt to delete the stock apps and then change their minds, they'll be able to re-download both from the App Store.

Jesus
Score: 10 Votes (Like | Disagree)
steve09090 Avatar
42 months ago

I don't understand why the watch itself can go to a maximum of 100M but the Depth app stop at 40.

I don't dive so I probably won't use it under 40M, but I find it strange. Is it the sensor who isn't capable to calculate the depth and/or temperature under the 40M?

edit: i answer to myself lol. Seems indeed an hardware issue as apple website claims that the sensor is able to calculate up to 40M so it’s probably the good explaination.
There was a great explanation by an actual Dive Instructor on Waveforms Podcast (MKBHD) where they interviewed 3 experts in diving, running, and hiking. It's worth a listen.



Specifically, the 40 metres relates to where recreational divers can dive using compressed air. Below 40 metres it becomes a technical dive as you have a different composition of gases in the tank and you have a dive computer that will organise a different mixture of those gases depending on the depth. The Apple Watch cannot do that which is why they are saying it needs to be used by recreational divers. (By his estimates), only 5% of people who dive do technical diving, with the rest doing recreational diving.

You can use it below 40 metres and the watch will still function fine, but you cannot use it as your Dive Computer.

Danny (Scuba instructor): https://bit.ly/Scuberro ('//www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqa0ExbFRGWHVud0FlWHRxd1F1bDc0bzJObVJDZ3xBQ3Jtc0tueTc2X2RzQUR5QkotbUkxQ0dtcWpiNktwX2Zxdkp2SnY5VTduT29Ea09tcGVRR2FqdEgxaUFCM0ducklUYVFiQXF2aFRhbzlxQnhzbVVIUWV0WjBraF9UYTJrNkV3ekJGa1VnTzY2U3ZIeDZEQ0U0VQ&q=https%3A%2F%2Fbit.ly%2FScuberro&v=vGlbCM2coDU')
Hellah Sidibe (Runner/YouTuber): https://bit.ly/HellahGoodYoutube ('//www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbXdfQWxFdFNoQkljSzdrMEpPSGxsSzRvbjNSd3xBQ3Jtc0ttczhfTmFsRVJJMUVXelFHTFdEdHNaYzJXU2M1d043cmlvTGRWcXhlZGswb1IxakVjQlhWY1IxT2cxNFhCenhLeGRfYjNEZTdxenpqUTl3N09IS1FrT0tsTXNweVNtQTRCT0tvMW9PR3VWcUpKcmNobw&q=https%3A%2F%2Fbit.ly%2FHellahGoodYoutube&v=vGlbCM2coDU')
Guillermo Ponzo (Mountaineer): https://bit.ly/guillermopunzo ('//www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbG8zdVVVZVR5eHZaQkEzcUxSM0JydnU1WFhrZ3xBQ3Jtc0trYnh3SnQ5VVB2YmdoZmJMZF9GcUhmX0NYazEyRk9mRUh0YWZhNXNzYnZMZXFzRzhEOUQ2cllJVTBpYWl3eFRmQ1hKbTN3OWs0MnJiMXc5Ym00c0V4MjM0eVFBdllaZnJFb3l4M1B1c1laZnV6c0lycw&q=https%3A%2F%2Fbit.ly%2Fguillermopunzo&v=vGlbCM2coDU')
Score: 9 Votes (Like | Disagree)
timmyh Avatar
42 months ago

Wonder how much they’re going to charge for that Oceanic dive computer app?
As a free app on the App Store, Oceanic+ will include depth tracking (including depth alarms), GPS tracking, logbook (up to 12 dives), snorkeling, and more.

For more advanced diving options such as No Decompression Limit, users will be required to purchase an Oceanic+ subscription plan ($4.99/day, $9.99/month, or $79/year). Oceanic+ will be available on the App Store later this fall.
Score: 4 Votes (Like | Disagree)
NicoTRZ Avatar
42 months ago

There was a great explanation by an actual Dive Instructor on Waveforms Podcast (MKBHD) where they interviewed 3 experts in diving, running, and hiking. It's worth a listen.



Specifically, the 40 metres relates to where recreational divers can dive using compressed air. Below 40 metres it becomes a technical dive as you have a different composition of gases in the tank and you have a dive computer that will organise a different mixture of those gases depending on the depth. The Apple Watch cannot do that which is why they are saying it needs to be used by recreational divers. (By his estimates), only 5% of people who dive do technical diving, with the rest doing recreational diving.

You can use it below 40 metres and the watch will still function fine, but you cannot use it as your Dive Computer.

Danny (Scuba instructor): https://bit.ly/Scuberro ('//www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqa0ExbFRGWHVud0FlWHRxd1F1bDc0bzJObVJDZ3xBQ3Jtc0tueTc2X2RzQUR5QkotbUkxQ0dtcWpiNktwX2Zxdkp2SnY5VTduT29Ea09tcGVRR2FqdEgxaUFCM0ducklUYVFiQXF2aFRhbzlxQnhzbVVIUWV0WjBraF9UYTJrNkV3ekJGa1VnTzY2U3ZIeDZEQ0U0VQ&q=https%3A%2F%2Fbit.ly%2FScuberro&v=vGlbCM2coDU')
Hellah Sidibe (Runner/YouTuber): https://bit.ly/HellahGoodYoutube ('//www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbXdfQWxFdFNoQkljSzdrMEpPSGxsSzRvbjNSd3xBQ3Jtc0ttczhfTmFsRVJJMUVXelFHTFdEdHNaYzJXU2M1d043cmlvTGRWcXhlZGswb1IxakVjQlhWY1IxT2cxNFhCenhLeGRfYjNEZTdxenpqUTl3N09IS1FrT0tsTXNweVNtQTRCT0tvMW9PR3VWcUpKcmNobw&q=https%3A%2F%2Fbit.ly%2FHellahGoodYoutube&v=vGlbCM2coDU')
Guillermo Ponzo (Mountaineer): https://bit.ly/guillermopunzo ('//www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbG8zdVVVZVR5eHZaQkEzcUxSM0JydnU1WFhrZ3xBQ3Jtc0trYnh3SnQ5VVB2YmdoZmJMZF9GcUhmX0NYazEyRk9mRUh0YWZhNXNzYnZMZXFzRzhEOUQ2cllJVTBpYWl3eFRmQ1hKbTN3OWs0MnJiMXc5Ym00c0V4MjM0eVFBdllaZnJFb3l4M1B1c1laZnV6c0lycw&q=https%3A%2F%2Fbit.ly%2Fguillermopunzo&v=vGlbCM2coDU')
Well thank you! Seems like a more plausible explanation than the one of the supported depth (no offence Nightfox, it was interesting as well)
Score: 3 Votes (Like | Disagree)