Make it easy for users to discover and download your app from a website on iOS. Now you can distribute and sell them through the Mac App Store. They are built in Xcode with powerful native APIs and web technologies, such as HTML5, CSS3, and JavaScript. Safari extensions are a powerful way to add new features to Safari. With universal links, you can always give users the most integrated mobile experience, even when your app isn’t installed on their device. Seamlessly link to content inside your app, or on your website in iOS 9.