SwiftUI - What's Different between VStack, HStack and ZStack?

Th Stack is equivalent to UIStackView in UIKit. Stack is use to arrange elements horizontal, vertical and depth.

VStack : 
Arrange the elements in the vertically, if your have two element inside the VStack then it's arrange in vertical.

VStack {
    RoundedRectangle(cornerRadius: 10)
        .fill(Color.yellow)
        .frame(width: 80, height: 80)

    RoundedRectangle(cornerRadius: 10)
        .fill(Color.red)
        .frame(width: 80, height: 80)
}

HStack : 
Arrange the elements in the horizontal, if your have two element inside the HStack then it's arrange in Horizontally.

HStack {
    RoundedRectangle(cornerRadius: 10)
        .fill(Color.yellow)
        .frame(width: 80, height: 80)

    RoundedRectangle(cornerRadius: 10)
        .fill(Color.red)
        .frame(width: 80, height: 80)
}

ZStack : 
Arrange the elements in the Z index, if you have two element inside the ZStack then first element is below the second element.

ZStack {
    RoundedRectangle(cornerRadius: 10)
        .fill(Color.yellow)
        .frame(width: 200, height: 200)

    RoundedRectangle(cornerRadius: 10)
        .fill(Color.red)
        .frame(width: 80, height: 80)
}

Thanks

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