The app which demonstrates the usage of a framework. https://medium.com/better-programming/ios-build-your-cocoapods-framework-with-an-example-app-from-scratch-fd0f7bdf3f8c

ViewController.swift

import UIKit
import HelloWorldSDK

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let label: UILabel = {
            let label = UILabel()
            label.frame.origin = CGPoint(x: 100, y: 100)
            label.text = HelloWorld().hello(to: "World")
            label.sizeToFit()
            return label
        }()
        
        view.addSubview(label)
    }

}