iOS Human Interface Guidelines

iOS Human Interface Guidelines

The world’s most advanced mobile OS offers everything you need to design beautiful, engaging apps that radiate power and simplicity.

As an app designer, you have the opportunity to deliver an extraordinary product that rises to the top of the App Store charts. To do so, you’ll need to meet high expectations for quality and functionality.

Three primary themes differentiate iOS from other platforms:

Clarity. Throughout the system, text is legible at every size, icons are precise and lucid, adornments are subtle and appropriate, and a sharpened focus on functionality motivates the design. Negative space, color, fonts, graphics, and interface elements subtly highlight important content and convey interactivity.

Deference. Fluid motion and a crisp, beautiful interface help people understand and interact with content while never competing with it. Content typically fills the entire screen, while translucency and blurring often hint at more. Minimal use of bezels, gradients, and drop shadows keep the interface light and airy, while ensuring that content is paramount.

Depth. Distinct visual layers and realistic motion convey hierarchy, impart vitality, and facilitate understanding. Touch and discoverability heighten delight and enable access to functionality and additional content without losing context. Transitions provide a sense of depth as you navigate through content.

To maximize impact and reach, keep the following principles in mind as you imagine your app’s identity.

appropriate A./BrE əˈprəʊprɪət,AmE əˈproʊpriət/ 合适的 B./BrE əˈprəʊprɪeɪt,AmE əˈproʊpriˌeɪt/ 占用

subtly highlight important content and convey interactivity 巧妙突出重要内容并传达交互性

fills the entire screen 填充整个屏幕

Distinct visual layers 不同的视觉层次