Building iOS applications begins with clarity about the target users, the core task the app must perform, and the scenario to address in the initial release. A thorough discovery phase helps outline the MVP, select an appropriate architecture, and skip features that seem impressive on paper but don't enhance actual usage.

After the foundation is in place, attention moves to how the UI behaves, performance, and reliability across different iPhone models and iOS versions. Uniform navigation schemes, thoughtful state handling, and well-planned integrations (payments, authentication, analytics, backend APIs) help keep the product maintainable and scalable following the App Store release.