Can I use SF UI Text font in a web application? If it is legal to use the font on a web application then how can I get a license for the font? I could not find the font on the Apple fonts.

Hello, The system font for iOS is SF-Pro, as mentioned here: https://developer.apple.com/design/human-interface-guidelines/typography. "SF Pro is the system font in iOS and iPadOS." However, when I print the font, created with `[UIFont systemFontOfSize:18.0 weight:UIFontWeightRegular], I get the following info: <UICTFont: 0x114f1f400> font-family: ".SFUI-Regular"; font-weight: normal; font-style: normal; font-size: 18.00pt. If SF-Pro is the system font , shouldn't the font family be some variation of SFPro? How come it prints font-family: ".SFUI-Regular" Thank you

I'm confused about the SF Pro fonts. Can these be used in our apps? I tried pasting characters from SF Pro into a label, but was unable to get them to display properly. "SF Pro" doesn't appear in the list of available fonts in Xcode. If these are not intended to be used by app developers, then what is their purpose? Are "SF Symbols" different that SF Pro? What about the list of icons that appears in the "Symbols Library" in Xcode? There are so many different sources of symbols and icons, it is very confusing. If any of these sources is OK to use in an iOS app, is it also OK to export them for use in the event that business needs require me to create an alternate version of my app for some hypothentical non-iOS platform? Thanks, Frank