We give developers powerful APIs to build incredible capabilities into their apps for Apple products, backed by a set of ...

Phone Duo will be available to customers starting October 23, 2026. To get your apps and games ready today, you can:Build or ...

The original Developer ID Certification Authority (Sub-CA) expires on February 1, 2027. Certificates issued by this authority will stop working on that date.What to do: Check if you’re affected. In ...

Get tips on submitting your iPhone Duo app, sign up for new iPhone Duo Group Labs, browse new activities, explore localized ...

Make sure your app is ready for iPhone Duo on day one. Run the app resizability skill, fix layout patterns, and test resizing to help your app shine.

Get tips on submitting your iPhone Duo app. Sign up for new iPhone Duo Group Labs. Join us for a new developer event on speed and efficiency. Explore localized documentation. Browse new App Store ...

Sign up for new Group Labs to ask questions, get answers, and follow the discussion about all things Duo. Explore best practices, templates, and specifications for ...

Please turn on JavaScript in your browser and refresh the page to view its content.

Icon Composer Icon Composer lets you create layered icons out of Liquid Glass from a single design for iPhone, iPad, Mac, and Apple Watch. A multi-layer icon format allows you to craft your icon and ...

Take advantage of the latest capabilities in Apple platforms and the App Store to deliver your most innovative apps yet. When you distribute on the App Store, people around the world can discover and ...

Launch your app on a simulated iOS, iPadOS, tvOS, visionOS, or watchOS device, or on a physical device paired with your Mac. To test your app, build and run it on a simulated or physical device. Use ...