Whether you’re redesigning an older app or creating a new one, consider approaching the job in this way:

    First, look past the UI to the app’s core functionality and affirm its relevance.

    Next, use the themes of iOS to inform the design of the UI and the user experience. Add details and embellishments with care and never gratuitously.

    Finally, be sure to design your UI to adapt to various devices and modes so that users can enjoy your app in as many contexts as possible.

    Throughout the process, be prepared to defy precedent, question assumptions, and let a focus on content and functionality motivate every design decision.