Starting with a clear picture of the target users, the core task the app must accomplish, and the use case the initial release should address. A thorough discovery phase helps define the MVP scope, select an appropriate architecture, and omit features that look impressive on paper but do not enhance actual usage.

After laying the foundation, attention turns to how the interface behaves, performance, and stability across different iPhone models and iOS versions. Uniform navigation patterns, meticulous state management, and well-planned integrations (payments, authentication, analytics, backend APIs) make the product easier to maintain and scale following the App Store launch.