图标和图像大小
每一个应用程序需要一个应用程序图标和启动图像。此外，一些应用程序还需要自定义的图标来表示特定于应用程序的内容、功能，或在导航栏、工具栏和标签栏模式。所有图像和图标，苹果官方都建议使用PNG格式。
iOS5与iOS6
| Description | Size for iPhone 5 and iPod touch (5th generation) | Size for high-resolution iPhone and iPod touch | Size for iPhone and iPod touch | Size for high-resolution iPad | Size for iPad |
| App icon | 114 x 114 | 114 x 114 | 57 x 57 | 144 x 144 | 72 x 72 |
| App icon for the App Store | 1024 x 1024 (recommended) | 1024 x 1024 (recommended) | 512 x 512 | 1024 x 1024 (recommended) | 512 x 512 |
| Launch image | 640 x 1136 | 640 x 960 | 320 x 480 | 1536 x 2008 (portrait) 2048 x 1496 (landscape) |
768 x 1004 (portrait) 1024 x 748 (landscape) |
| Small icon for Spotlight search results and Settings | 58 x 58 | 58 x 58 | 29 x 29 | 100 x 100 (Spotlight search results) 58 x 58 (Settings) |
50 x 50 (Spotlight search results) 29 x 29 (Settings) |
iOS7与iOS8
| Asset | iPhone 6 Plus (@3x) | iPhone 6 and iPhone 5 (@2x) | iPhone 4s (@2x) | iPad and iPad mini (@2x) | iPad 2 and iPad mini (@1x) |
| App icon | 180 x 180 | 120 x 120 | 120 x 120 | 152 x 152 | 76 x 76 |
| App icon for the App Store | 1024 x 1024 | 1024 x 1024 | 1024 x 1024 | 1024 x 1024 | 1024 x 1024 |
| Launch image | 1242 x 2208 (portrait) 2208 x 1242 (landscape) |
For iPhone 6, 750 x 1334 For iPhone 5, 640 x 1136 |
640 x 960 | 1536 x 2048 (portrait) 2048 x 1536 (landscape) |
768 x 1024 (portrait) 1024 x 768 (landscape) |
| Spotlight search results icon | 120 x 120 | 80 x 80 | 80 x 80 | 80 x 80 | 40 x 40 |
| Settings icon | 87 x 87 | 58 x 58 | 58 x 58 | 58 x 58 | 29 x 29 |