Apple Seeds iOS 8.2 With WatchKit SDK for Apple Watch Apps to Developers

Apple today announced that its set of WatchKit development tools are now available for developers, allowing them to begin creating apps and software for the company's upcoming Apple Watch.

"Apple Watch is our most personal device ever, and WatchKit provides the incredible iOS developer community with the tools they need to create exciting new experiences right on your wrist," said Philip Schiller, Apple's senior vice president of Worldwide Marketing. "With the iOS 8.2 beta SDK, developers can now start using WatchKit to create breakthrough new apps, Glances and actionable notifications designed for the innovative Apple Watch interface and work with new technologies such as Force Touch, Digital Crown and Taptic Engine."

WatchKit is being released as part of the iOS 8.2 and Xcode 6.2 beta, both of which have been made available to developers today.

ios_8_2_beta_crop
Both the iOS 8.2 Beta with WatchKit and the Xcode 6.2 beta can be downloaded from Apple's developer site, which also has Apple Watch development resources for developers. WatchKit can currently be used to create Glances, actionable notifications, and Apple Watch apps that are powered by the iPhone. Many Apple Watch apps will be driven by code that runs on the iPhone, with a UI that displays content on the watch itself. According to Apple, "fully native" Apple Watch apps can be created "later next year."

As described by Apple, actionable notifications are notifications that allow users to take an action or respond directly from their wrists with the Apple Watch, turning off the lights when they've left the house, for example, or accessing flight information at an airport. Glances are somewhat simpler, aiming to give users quick information at a glance like news, weather, sports scores, and more.

watchkitapptypes
In its press release, Apple highlights several developers who have already begun working with WatchKit, giving some additional insight into how the WatchKit tools can be used. The ESPN app for Apple Watch delivers live scores and information on teams, according to ESPN VP John Kosner, and it offers snapshots of live games through Glances and alerts on score changes through actionable notifications.

Instagram has used WatchKit to develop actionable notifications that let users instantly like a photo or respond with an emoji, plus there's an Instagram news and watch list to let users see their friends favorite photos and get an overview of likes and comments. American Airlines has used Apple Watch to create pre-trip notifications, updates for gate changes, gate connection information, and alerts when a flight begins boarding, all of which can be accessed directly from the wrist.

In addition to sharing these use cases for the Apple Watch, Apple has also created a dedicated Apple Watch site for developers, outlining the difference between full apps, Glances, and actionable notifications, offering download links to the iOS 8.2 beta with WatchKit SDK, and providing design guidelines and templates.

watchkit
Apple has said that its Apple Watch will be released in "early 2015," but an exact launch date remains unclear. At the lower end, the device will retail for $349, with estimates placing pricing for the higher-end solid gold version at thousands of dollars.

Related Roundup: Apple Watch 11
Tag: iOS 8.2
Buyer's Guide: Apple Watch (Buy Now)
Related Forum: iOS 8

Popular Stories

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 ...
Sad Siri Feature

Apple AI Chief John Giannandrea Retiring After Siri Delays

Monday December 1, 2025 2:16 pm PST by
Apple AI chief John Giannandrea is stepping down from his position and retiring in spring 2026, Apple announced today. Giannandrea will serve as an advisor between now and 2026, with former Microsoft AI researcher Amar Subramanya set to take over as vice president of AI. Subramanya will report to Apple engineering chief Craig Federighi, and will lead Apple Foundation Models, ML research, and ...
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...
Netflix Smaller 4

Netflix Kills Casting From Its Mobile App to Most Modern TVs

Monday December 1, 2025 4:36 am PST by
Netflix has quietly removed the ability to cast content from its mobile apps to most modern TVs and streaming devices, including newer Chromecast models and the Google TV Streamer. The change was first spotted by users on Reddit and confirmed in an updated Netflix support page (via Android Authority), which now states that the streaming service no longer supports casting from mobile devices...
Touchscreen MacBook Feature

Here Are the Four MacBooks Apple Is Expected to Launch Next Year

Monday December 1, 2025 5:00 am PST by
2026 could be a bumper year for Apple's Mac lineup, with the company expected to announce as many as four separate MacBook launches. Rumors suggest Apple will court both ends of the consumer spectrum, with more affordable options for students and feature-rich premium lines for users that seek the highest specifications from a laptop. Below is a breakdown of what we're expecting over the next ...
iphone 17 cyber

iPhone 17 Demand Is Breaking Apple's Sales Records

Tuesday December 2, 2025 9:44 am PST by
Apple's iPhone 17 lineup is selling well enough that Apple is on track to ship more than 247.4 million total iPhones in 2025, according to a new report from IDC. Total 2025 shipments are forecast to grow 6.1 percent year over year due to iPhone 17 demand and increased sales in China, a major market for Apple. Overall worldwide smartphone shipments across Android and iOS are forecast to...
Cyber Week Deals 2025

Best Cyber Week Apple Deals Include Big Discounts on AirPods, Apple Watch, and More

Sunday November 30, 2025 7:33 am PST by
Cyber Week is here, and you can find popular Apple products like AirPods, iPad, Apple Watch, and more at all-time low prices. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site running. Specifically,...
iOS 26

What to Expect From Apple This December: iOS 26.3 Beta, Replay 2025, and More

Monday December 1, 2025 8:40 am PST by
The calendar has turned to December, and the quieter year-end holiday season is now upon us. Nevertheless, we can still expect a few things from Apple this month. Apple previously announced that iOS 26.2 will be released to the general public in December, and we can expect corresponding updates to be released as well, including iPadOS 26.2, macOS 26.2, watchOS 26.2, tvOS 26.2, and visionOS...
studio display purple february

M5 iPad Pro Could Hint at New Studio Display Feature

Sunday November 30, 2025 10:30 am PST by
The updated specs of the M5 iPad Pro may point toward a major new feature for Apple's next-generation Studio Display expected in early 2026. Apple's latest iPad Pro debuted last month and contains one display-related change that stands out: it can now drive external monitors at up to 120Hz with Adaptive Sync. The feature should deliver lower latency, smoother motion, and fewer visual...

Top Rated Comments

troop231 Avatar
144 months ago
Hopefully this will tell us what resolution and PPI is on the Apple Watch.
I just confirmed the 38mm watch UI size is 136w x 170h and the 42mm watch UI size is 156w x 195h.

Those are in points by the way, so the native resolution will be 2x most likely:
38mm: 272w x 340h Px
42mm: 312w x 390h Px

Edit: Confirmed 2x will indeed be used: "Create all of your image resources as @2x images. There is no need to include non @2x resources in your Watch app bundle."

Score: 15 Votes (Like | Disagree)
Dwalls90 Avatar
144 months ago
Perfect.

@PanguTeam can start ripping it apart looking for exploits.
Score: 7 Votes (Like | Disagree)
BlaqkAudio Avatar
144 months ago
Does it mean that it is retina?

At 2x, the 38 mm is 582.08 PPI and the 42 mm is 604.09 PPI.
Score: 5 Votes (Like | Disagree)
cmChimera Avatar
144 months ago
"Starting later next year, developers will be able to create fully native apps for Apple Watch."

Later next year?
Score: 4 Votes (Like | Disagree)
troop231 Avatar
144 months ago
As I said, the pixel dimensions are 312x390, the point dimensions are 156x195 (for the larger size of course). This is running in the simulator with Xcode 6.2. Their catalog app uses the following code to output the image I posted earlier.


CGRect bounds = [[WKInterfaceDevice currentDevice] screenBounds];
CGFloat scale = [[WKInterfaceDevice currentDevice] screenScale];

Yes I know, and I also said I updated my post to show the correct values.
Score: 3 Votes (Like | Disagree)
troop231 Avatar
144 months ago
I have the simulator running right now and it's reporting a screen bounds of 156x195 with scale of 2x.

http://imgur.com/rwN6lrS
I got my information from Apple's Photoshop files they released today. That would make the resolution half then of what those documents show. I edited my original post to show the correct values then.
Score: 3 Votes (Like | Disagree)