Apple Watch Ultra 'Depth' and 'Siren' Apps Appear on App Store Ahead of Device's Launch This Friday - MacRumors
Skip to Content

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 4
Related Forum: Apple Watch

Popular Stories

Surprise and Shine Live Coverage Article

Apple Event Live Blog: iPhone Duo, iPhone 18 Pro, and More

Wednesday September 9, 2026 9:10 am PDT by
Apple's "Surprise and Shine" event kicks off today at 10:00 a.m. Pacific Time, where we're expecting to see the foldable iPhone Duo, the iPhone 18 Pro and Pro Max, Apple Watch Series 12 and Ultra 4 models, new AirPods 5 earphones, and perhaps some other announcements. Apple is providing a live video stream on its website, on YouTube, and in the company's TV app across various platforms. We...
apple surprise and shine event

Apple Event Today: iPhone 18 Pro and iPhone Duo Cheat Sheet

Tuesday September 8, 2026 10:24 am PDT by
Apple's biggest event of the year is almost here, and all eyes are on Cupertino. With the first foldable iPhone expected to headline Apple's "Surprise and Shine" event on Wednesday, September 9, at 10:00 a.m. Pacific Time, the rumor mill has been running full throttle, fuelled by the biggest single design change in the life of the iPhone. To get you up to speed, here's a quick reference...
apple watch series 12

Leak Hints at Four New Features for Apple Watch Series 12 and Ultra 4

Monday September 7, 2026 8:57 am PDT by
Ahead of the announcement of the Apple Watch Series 12 and Ultra 4 later this week, code in the watchOS 27 and iOS 27 betas points to a series of new features for the product line. The information comes from a new post from MacRumors forums member "pdfu." The findings include: New "Readiness" app: An all-new separate Watch app referred to in code as "Readiness," distinct from the...

Top Rated Comments

53 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
53 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
53 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)
53 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 ('https://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 ('https://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 ('https://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
53 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
53 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 ('https://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 ('https://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 ('https://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)
Latest Stories
Apple Says iPhone 18 Pro Max Users With AT&T Cellular Issue Need to Have Device Replaced
Apple Says iPhone 18 Pro Max Users With AT&T Cellular Issue Need to Have Device Replaced
4 hours ago
Apple Announces 'Full Disk Access' Changes on macOS Due to AI Agents
Apple Announces 'Full Disk Access' Changes on macOS Due to AI Agents
12 hours ago
AT&T and Apple Just Took Steps Toward Fixing iPhone 18 Pro Max Issue
AT&T and Apple Just Took Steps Toward Fixing iPhone 18 Pro Max Issue
12 hours ago
AT&T on iPhone 18 Pro Max Issues: 'We Are Working With Apple'
AT&T on iPhone 18 Pro Max Issues: 'We Are Working With Apple'
15 hours ago
Upgrading From an Older Apple Watch? Here's How the New Features Stack Up
Upgrading From an Older Apple Watch? Here's How the New Features Stack Up
16 hours ago
Beats 360 Cushion Kits and Apple Accessories See Early Prime Day Price Drops
Beats 360 Cushion Kits and Apple Accessories See Early Prime Day Price Drops
17 hours ago
Apple Store in UK Reopening on iPhone Duo Launch Day
Apple Store in UK Reopening on iPhone Duo Launch Day
18 hours ago
AT&T Acknowledges iPhone 18 Pro Max Issues: Update 'Immediately'
AT&T Acknowledges iPhone 18 Pro Max Issues: Update 'Immediately'
1 day ago
New 'AirFly Drive' Accessory Turns Wired CarPlay Into Wireless CarPlay
New 'AirFly Drive' Accessory Turns Wired CarPlay Into Wireless CarPlay
1 day ago
Apple Shares Photos Shot on iPhone Duo
Apple Shares Photos Shot on iPhone Duo
1 day ago
Apple Says iPhone Duo Has Replaceable 'Cover Layer'
Apple Says iPhone Duo Has Replaceable 'Cover Layer'
2 days ago
Apple's Smart Home Camera Will Apparently Have 'No Video Recording'
Apple's Smart Home Camera Will Apparently Have 'No Video Recording'
2 days ago
Apple TV Just Updated Its Selection of 'Bonus' Movies
Apple TV Just Updated Its Selection of 'Bonus' Movies
2 days ago
iPhone 18 Pro Colors Buyer's Guide: Which Should You Choose?
iPhone 18 Pro Colors Buyer's Guide: Which Should You Choose?
2 days ago
Early Prime Big Deal Days: Best Discounts on Accessories, TVs, and More at Amazon
Early Prime Big Deal Days: Best Discounts on Accessories, TVs, and More at Amazon
2 days ago
MacBook Pro With OLED Touch Screen Rumored to Launch in October or November
MacBook Pro With OLED Touch Screen Rumored to Launch in October or November
2 days ago
Apple's All-New Home Hub Rumored to Launch in These Four Colors
Apple's All-New Home Hub Rumored to Launch in These Four Colors
2 days ago
iPhone 18 Pro Aperture Control Goes Fully Manual in Halide 3.2
iPhone 18 Pro Aperture Control Goes Fully Manual in Halide 3.2
2 days ago
Apple Stores Receive 'Do Not Open' Boxes Ahead of Smart Home Products Launch
Apple Stores Receive 'Do Not Open' Boxes Ahead of Smart Home Products Launch
2 days ago
iPhone 18 Pro Sales Jump in China Ahead of iPhone Duo Launch
iPhone 18 Pro Sales Jump in China Ahead of iPhone Duo Launch
2 days ago
Apple TV Still Down for Some Users Following Apple Services Outage
Apple TV Still Down for Some Users Following Apple Services Outage
2 days ago
Microsoft 365 Work Accounts May Stop Syncing in Apple Mail
Microsoft 365 Work Accounts May Stop Syncing in Apple Mail
20 hours ago
Apple's Smart Home Hub: Everything We Know So Far
Apple's Smart Home Hub: Everything We Know So Far
2 days ago
Apple's Home Hub Borrows From the iPhone Duo's StandBy Mode
Apple's Home Hub Borrows From the iPhone Duo's StandBy Mode
2 days ago
Apple Invites App Updated With Three New Features
Apple Invites App Updated With Three New Features
3 days ago
Apple Event on October 13?
Apple Event on October 13?
3 days ago
Apple Watch SE 3 vs. Series 12 Buyer's Guide: Which Should You Buy?
Apple Watch SE 3 vs. Series 12 Buyer's Guide: Which Should You Buy?
3 days ago
iPad Mini 8 to Offer These 10 New Features
iPad Mini 8 to Offer These 10 New Features
3 days ago
DoorDash Unveils AI Food Ordering Through Apple's Messages App
DoorDash Unveils AI Food Ordering Through Apple's Messages App
3 days ago
Amazon Takes Up to $150 Off Select M5 MacBook Air Models
Amazon Takes Up to $150 Off Select M5 MacBook Air Models
3 days ago