alt Hacker NewsThat’s thanks to third party devs, not Apple. If you look primarily at proper native UIKit/SwiftUI apps, there’s a lot more consistency, but there’s a lot of cross platform lowest common denominator garbage out there that pays zero mind to platform conventions.
You see this under macOS, too. A lot of Electron apps for instance replace the window manager’s standard titlebar with some custom thing that doesn’t implement chunks of the standard titlebar’s functionality. It’s frustrating.
In Messages, to create a new message tap the pencil-in-a-square icon in the upper right corner.
In Notes, to create a new Note, tap the pencil-in-a-square icon in the lower right corner.
In Calendar, to create a new appointment, tap the + icon in the upper right corner.
In Reminders, to create a new reminder, tap the + in a blue circle in the lower left corner. At least it offers a text label "New Reminder"
These are all Apple apps and they all do it differently. And that's not even getting into gestures and other actions that you just have to stumble upon to even know they exist.