The IOS icon is used for application-related operations.
Different icons in IOS
AppIcon
Application icon for App Store
Small icons for search results and settings
Toolbar and navigation bar icon
Tab bar icon
9.27.1. AppIcon ¶
AppIcon is the icon of the application that appears on the device SpringBoard (all applications on the default screen).
9.27.2. Application icon for App Store ¶
It is a high-resolution application icon for 512 x 512 or 1024 x 1024 (recommended size).
9.27.3. Small icons for search results and settings ¶
Use this small icon in applications that search for lists.
It is also used with related applications where the function is enabled and disabled on the settings screen. For example, enable location services.
9.27.4. Toolbar and navigation bar icon ¶
A list of special standard icons used in toolbars and navigation bars. It includes shares such as icon cameras, writing and so on.
9.27.5. Tab bar icon ¶
A list of special standard icons is used in the tab bar. It includes icons such as bookmarks, contacts, downloads, etc.
Some different iOS devices have different icons of different sizes. You can see more guidelines for icons in Apple files: ios人机交互界面指南 .