iOS applications should avoid asking for setup information up front, since users expect apps to work immediately. Design for the majority of users by relying on device settings, sensible defaults, or synchronization services like iCloud. When setup information is strictly necessary, prompt the user during their first use in a non-disruptive way rather than at launch.

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The launch experience of an iOS application should be fast and seamless to positively impact user perception. Key guidelines for a delightful launch include providing a responsive launch screen, launching in the appropriate device orientation, and avoiding upfront requests for setup information so the app can function immediately.

iOS App Launch Experience

An iOS app that supports both portrait and landscape modes should launch using the device's current orientation. If the app only runs in one orientation, it should always launch in that orientation. Unless there is a compelling reason otherwise, an app in landscape mode should orient itself correctly regardless of whether the device was rotated left or right.

iOS App Launch Orientation

Deferring iOS App Setup Requests

In iOS, a launch screen appears the instant the app starts and is quickly replaced by the first functional screen. Its purpose is to make the app feel fast and responsive while initial content loads. To ensure a seamless transition, the launch screen should be plain, closely resemble the first app screen, and avoid drawing attention to itself.

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