Formatting Content
Create a layout that fits the screen of an iOS device. Users should see primary content without zooming or scrolling horizontally.
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Touch Controls
Use UI elements that are designed for touch gestures to make interaction with your app feel easy and natural.
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Hit Targets
Create controls that measure at least 44 points x 44 points so they can be accurately tapped with a finger.
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Text Size
Text should be at least 11 points so it's legible at a typical viewing distance without zooming.
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Contrast
Make sure there is ample contrast between the font color and the background so text is legible.
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Spacing
Don't let text overlap. Improve legibility by increasing line height or letter spacing.
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High Resolution
Provide high-resolution versions of all image assets. Images that are not @2x and @3x will appear blurry on the Retina display.
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Distortion
Always display images at their intended aspect ratio to avoid distortion.
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Organization
Create an easy-to-read layout that puts controls close to the content they modify.
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Alignment
Align text, images, and buttons to show users how information is related.
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Additional Design Resources
View video presentations and guides for designing great apps.
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