LNPopupController is an open source UI component from Leo Natan inspired by Apple’s Music and Podcasts apps allowing you to present view controllers as a popup of another view controller.
Attached to the popup view is a content view that can be brought in with a sliding gesture or a tap. The look is modernized for iOS 10, and the popup view can be customized with UIAppearance.
This animation from the readme shows a popup, and slide-in view created with LNPopupController:
You can find LNPopupController on Github here.
A nice Music app inspired UI component.