iOS design inconsistencies across Apple's apps

This has been bugging me for a while - definitely since iOS 11 was unveiled last June and probably before then. I have no clue what Apple's strategy is with their iOS app icon sets, other than to resign myself to the truth that there isn't one. For simplicity, I'm focusing on just the share icon in this post (what Apple formally calls the 'action' button) but these criticisms apply much more widely.iOS is, indeed, an inconsistent mess when it comes to user interface design. Every application looks and feels different, which trips me up all the time. Android is a little bit better in this regard thanks to Material Design, but that's really not saying much.And you know what? I'd rather have misaligned ports I never see at the bottom of my phone than inconsistent UI design I look at multiple times a day.