VIPER vs MVVM: which architecture is better for iOS apps?

MVVM is often considered better for most iOS apps because it balances testability, simplicity, and faster development. It’s easier to onboard new team members and works well with SwiftUI and Combine. VIPER offers stronger separation of concerns and testing advantages for large, complex projects, but it adds more initial overhead and code. MVVM is best for most new iOS apps; VIPER suits heavy modular, enterprise needs.