Starting with clarity is essential when building iOS apps: who will use it, what job the app should perform, and which scenario must be addressed in the initial release. A solid discovery phase helps define the MVP scope, select the appropriate architecture, and avoid features that look good on paper but don't enhance actual usage.

After the foundation is in place, attention turns to how the interface behaves, its performance, and stability across different iPhone models and iOS versions. Consistent navigation patterns, robust state management, and well-planned integrations (payments, authentication, analytics, and backend APIs) make the product easier to maintain and scale after the App Store launch.