This is an example SwiftUI animation prototyping using xCode Playground on iPad

syncing_loader.swift

import SwiftUI
import PlaygroundSupport

struct ContentView: View {
    
    @State private var isSpinning = false 
    @State private var isShowing = false 
    @State private var isDisplaying = false 
    
    var body: some View {
        ZStack{
            Rectangle()
                .frame(width: 414, height: 896, alignment: .center)
                .foregroundColor(Color(.systemGray6))
            
            // Spinner
            Image(systemName:     "arrow.2.circlepath")
                .font(.largeTitle)
                .foregroundColor(Color(.systemTeal))
                .rotationEffect(.degrees(isSpinning ? 360 : -360))
                .animation(Animation.easeInOut(duration: 2).repeatCount(1, autoreverses: false).speed(1))
                .onAppear() {
                    self.isSpinning.toggle()
            }
            
            // Circle
            Image(systemName: "circle.fill")
                .font(.system(size: 44))
                .foregroundColor(Color(.systemGreen))
                .opacity(isShowing ? 1 : 0)
                .animation(Animation.easeInOut(duration: 2).repeatCount(1, autoreverses: false).delay(2).speed(2))
                .onAppear() {
                    self.isShowing.toggle()
            }
            
            // Checkmark
            Image(systemName: "checkmark")
                .font(.title)
                .opacity(isDisplaying ? 1 : 0)
                .rotationEffect(.degrees(isDisplaying ? 0 : -30), anchor: .bottom)
            .animation(Animation.interpolatingSpring(stiffness: 170, damping: 5).delay(2))
                .onAppear() {
                    self.isDisplaying.toggle()
            }
            
        }
    }
}
let ContentView_Previews = ContentView()
let vc = UIHostingController(rootView: ContentView_Previews)
PlaygroundPage.current.liveView = vc