They seem to be basic UIKit apps, with no SwiftUI support. They is no authentication or backend support. They run on dummy data and free sample pictures. But from a purely UI / design perspective, these templates look they have good potential. They have templates for an e-commerce app, finance, fitness, food, media, reader, social, and travel.
Developing features for a large, established app, I often run get slowed down trying to throw together a new screen. You have to find the right spot in the code to update, build the whole app (not just what you changed), log in, and drill down to the right spot to try out your creation. Something’s off? Do it all over again.
Which is why I love the idea of the Playbook library, which is “a library that provides a sandbox for building UI components without having to worry about application-specific dependencies.” Yass! 🤟