Starting with clarity is essential when building iOS apps: identifying who will use the product, what problem it solves, and which scenario must be addressed in the initial release. A thorough discovery phase helps outline the MVP, select an appropriate architecture, and avoid features that look good on paper but don't enhance actual usage.

With the base in place, attention turns to UI responsiveness, speed, and reliability across iPhone variants and iOS releases. Uniform navigation schemes, prudent state handling, and thoughtfully designed integrations (payments, authentication, analytics, and backend APIs) simplify maintenance and scaling after release to the App Store.