You have a point. Apple's use of the plus circle symbol violates its own Human Interface Guidelines at worst, contradicts itself at best. From the iOS Guidelin

You have a point. Apple's use of the plus circle symbol violates its own Human Interface Guidelines at worst, contradicts itself at best. From the iOS Guidelines[0]: > If you create a button that looks like a common button that people know, ensure that the button behaves as they expect. For example, if you create a button that uses the plus.circle SF symbol, people expect it to let them add an item to the current view. Similarly, using the info.circle symbol in a button identifies it as an info button. From the Mac Guidelines[1]: > plus.circle - Displays additional detail for an item. [0]: https://developer.apple.com/design/human-interface-guidelines/ios/controls/buttons/ https://developer.apple.com/design/human-interface-guideline... [1]: https://developer.apple.com/design/human-interface-guidelines/macos/icons-and-images/system-images/ https://developer.apple.com/design/human-interface-guideline...