How to manage view when model the same but different views?

MVVM, where:

• Model is value types (structs)
• Views are value types (SwiftUI Views)
• ViewModel is a reference type (a class), so it can be passed around the app, and an ObservableObject (so Views can respond to changes)

There is nothing s powerful as Autolayout.

Depending on what you need, Spacer may provide some solution

https://stackoverflow.com/questions/62800463/correct-way-to-layout-swiftui-similar-to-autolayout

For more sophisticated needs, you'll have to use GeometryReader and rebuild some how AUtolayout by yourself: See example here for Portrait / Landscape, that should work also for iPhone / iPad:

https://stackoverflow.com/questions/67187484/autolayout-in-swiftui

If the views are really different, best would be to create 2 views and call the right one depending on userInterface idiom:

https://stackoverflow.com/questions/57652242/how-to-detect-whether-targetenvironment-is-ipados-in-swiftui

if UIDevice.current.localizedModel == "iPhone" {

} else if UIDevice.current.localizedModel == "iPad" {

}