Apple offers 2,400 icons for free
developer.apple.com
developer.apple.com
IMPORTANT
All SF Symbols shall be considered to be system-provided images as defined in the Xcode and Apple SDKs license agreements and are subject to the terms and conditions set forth therein. You may not use SF Symbols — or glyphs that are substantially or confusingly similar — in your app icons, logos, or any other trademark-related use. Apple reserves the right to review and, in its sole discretion, require modification or discontinuance of use of any Symbol used in violation of the foregoing restrictions, and you agree to promptly comply with any such request.
Some symbols can’t be exported as templates for customization and can be used only to reference Apple technologies as documented below.
https://developer.apple.com/design/human-interface-guideline...
https://developer.apple.com/design/human-interface-guideline...
In the image on the linked page, they use glyphs that are so common, some might consider them "standard". It's reprehensible that Apply might try and consider the "undo arrow" their own intellectual property. As a matter of fact, I don't see a single icon in that screenshot that I'd consider belonging to Apple. Those are all pretty much Font Awesome/IcoMoon staples.
Well, they don't. This is about this particular arrow(s) icon(s).
IcoMoon also licenses its fonts: https://icomoon.io/#icons-lindua/license
Did you look specifically at the "Symbols For Use As-Is" list?
https://developer.apple.com/design/human-interface-guideline...
That list is made up entirely of logos for Apple products and features, and images of their products. Many of them are trademarks! It'd be hard to think of anything that is more clearly Apple's IP than this.
https://developer.apple.com/sf-symbols/
> The system-provided images and symbols owned by Apple and documented as such in Apple's Human Interface Guidelines for iOS, watchOS, iPadOS, tvOS, and/or macOS (“System-Provided Images”) are licensed to You solely for the purpose of developing Applications for Apple-branded products that run on the system for which the image was provided. You agree that you shall not use or incorporate the System-Provided Images or any substantially or confusingly similar images into app icons, logos or make any other trademark use of the System-Provided Images. Your use of the System-Provided Images shall also be subject to any specific use restrictions with respect thereto as set forth in the Apple Software or Apple’s Human Interface Guidelines. Apple reserves the right to review and, in its sole discretion, require modification or discontinuance of use of any System-Provided images used in violation of the foregoing restrictions, and you agree to promptly comply with any such request. Upon termination of this Agreement, You may continue to distribute the System-Provided Images as used within Applications You developed using the Apple Software.
https://developer.apple.com/design/human-interface-guideline...
> All SF Symbols shall be considered to be system-provided images as defined in the Xcode and Apple SDKs license agreements and are subject to the terms and conditions set forth therein. You may not use SF Symbols — or glyphs that are substantially or confusingly similar — in your app icons, logos, or any other trademark-related use. Apple reserves the right to review and, in its sole discretion, require modification or discontinuance of use of any Symbol used in violation of the foregoing restrictions, and you agree to promptly comply with any such request.
> Your use of Symbols obtained from Apple’s SF Font is limited to creating mock-ups of user interfaces for software products running on Apple’s iOS, iPadOS, macOS and tvOS operating systems and your use of Symbols obtained from Apple’s SF Compact Font is limited to creating mock-ups of user interfaces for software products running on Apple’s iOS, iPadOS, macOS, tvOS and watchOS operating systems. Such Apple operating systems are referred to as the “Apple Platforms”. Your use of individual Symbols shall also be subject to any specific use restrictions with respect thereto as set forth in the Apple Software or Apple’s Human Interface Guidelines.
(SF Symbol is embedded in current versions of macOS/iOS, so you don't need a special license to use it in applications which run on those platforms.)
> IMPORTANT NOTE: THE APPLE SOFTWARE IS TO BE USED SOLELY FOR CREATING USER INTERFACES TO BE USED IN SOFTWARE PRODUCTS RUNNING ON APPLE’S iOS, iPadOS, macOS, tvOS OR watchOS OPERATING SYSTEMS, AS APPLICABLE, AND IS SUBJECT TO THE SPECIFIC USE RESTRICTIONS SET FORTH HEREIN.
Maybe that's changed, and that's why it's on HN? The linked page doesn't list a license.
> All SF Symbols shall be considered to be system-provided images as defined in the Xcode and Apple SDKs license agreements and are subject to the terms and conditions set forth therein. You may not use SF Symbols — or glyphs that are substantially or confusingly similar — in your app icons, logos, or any other trademark-related use. Apple reserves the right to review and, in its sole discretion, require modification or discontinuance of use of any Symbol used in violation of the foregoing restrictions, and you agree to promptly comply with any such request.
https://developer.apple.com/design/human-interface-guideline...
On the other hand, a more correct title could be: free for development for the Apple Platforms.